diff --git a/app/src/main/res/values-ar/strings.xml b/app/src/main/res/values-ar/strings.xml
index c6dd7d50..bd9cd668 100644
--- a/app/src/main/res/values-ar/strings.xml
+++ b/app/src/main/res/values-ar/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">الأحدث</string>
     <string name="show_recents">إظهار الأحدث</string>
     <string name="pdf_viewer">PDF Viewer</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">Open as</string>
     <string name="text_file">Text file</string>
diff --git a/app/src/main/res/values-az/strings.xml b/app/src/main/res/values-az/strings.xml
index 47189681..824bc671 100644
--- a/app/src/main/res/values-az/strings.xml
+++ b/app/src/main/res/values-az/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Recents</string>
     <string name="show_recents">Show recents</string>
     <string name="pdf_viewer">PDF Viewer</string>
+    <string name="invert_colors">Invert colors</string>
 
     <!-- Open as -->
     <string name="open_as">Open as</string>
diff --git a/app/src/main/res/values-bg/strings.xml b/app/src/main/res/values-bg/strings.xml
index 88c42302..fdeffd9b 100644
--- a/app/src/main/res/values-bg/strings.xml
+++ b/app/src/main/res/values-bg/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Recents</string>
     <string name="show_recents">Show recents</string>
     <string name="pdf_viewer">PDF Viewer</string>
+    <string name="invert_colors">Invert colors</string>
 
     <!-- Open as -->
     <string name="open_as">Open as</string>
diff --git a/app/src/main/res/values-ca/strings.xml b/app/src/main/res/values-ca/strings.xml
index b1120264..712d080f 100644
--- a/app/src/main/res/values-ca/strings.xml
+++ b/app/src/main/res/values-ca/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Recents</string>
     <string name="show_recents">Mostra els recents</string>
     <string name="pdf_viewer">Visualitzador de PDF</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">Obre com a</string>
     <string name="text_file">Text file</string>
diff --git a/app/src/main/res/values-cs/strings.xml b/app/src/main/res/values-cs/strings.xml
index ac7994ec..978fba85 100644
--- a/app/src/main/res/values-cs/strings.xml
+++ b/app/src/main/res/values-cs/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Recents</string>
     <string name="show_recents">Show recents</string>
     <string name="pdf_viewer">PDF Viewer</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">Otevřít jako</string>
     <string name="text_file">Textový soubor</string>
diff --git a/app/src/main/res/values-cy/strings.xml b/app/src/main/res/values-cy/strings.xml
index e4aca661..d8c1b577 100644
--- a/app/src/main/res/values-cy/strings.xml
+++ b/app/src/main/res/values-cy/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Recents</string>
     <string name="show_recents">Show recents</string>
     <string name="pdf_viewer">PDF Viewer</string>
+    <string name="invert_colors">Invert colors</string>
 
     <!-- Open as -->
     <string name="open_as">Agor fel</string>
diff --git a/app/src/main/res/values-da/strings.xml b/app/src/main/res/values-da/strings.xml
index b22e03a5..cf1f1a0d 100644
--- a/app/src/main/res/values-da/strings.xml
+++ b/app/src/main/res/values-da/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Seneste</string>
     <string name="show_recents">Vis seneste</string>
     <string name="pdf_viewer">PDF Viewer</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">Åbn som</string>
     <string name="text_file">Tekstfil</string>
diff --git a/app/src/main/res/values-de/strings.xml b/app/src/main/res/values-de/strings.xml
index a32d454b..3dfa2d3b 100644
--- a/app/src/main/res/values-de/strings.xml
+++ b/app/src/main/res/values-de/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Neueste</string>
     <string name="show_recents">Zeige die Neuesten</string>
     <string name="pdf_viewer">PDF-Betrachter</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">Öffnen als</string>
     <string name="text_file">Text-Datei</string>
diff --git a/app/src/main/res/values-el/strings.xml b/app/src/main/res/values-el/strings.xml
index eb8d004a..a5902a60 100644
--- a/app/src/main/res/values-el/strings.xml
+++ b/app/src/main/res/values-el/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Πρόσφατα</string>
     <string name="show_recents">Εμφάνιση προσφάτων</string>
     <string name="pdf_viewer">Προβολή PDF</string>
+    <string name="invert_colors">Invert colors</string>
 
     <!-- Open as -->
     <string name="open_as">Άνοιγμα ως</string>
diff --git a/app/src/main/res/values-en-rUS/strings.xml b/app/src/main/res/values-en-rUS/strings.xml
index 88c42302..fdeffd9b 100644
--- a/app/src/main/res/values-en-rUS/strings.xml
+++ b/app/src/main/res/values-en-rUS/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Recents</string>
     <string name="show_recents">Show recents</string>
     <string name="pdf_viewer">PDF Viewer</string>
+    <string name="invert_colors">Invert colors</string>
 
     <!-- Open as -->
     <string name="open_as">Open as</string>
diff --git a/app/src/main/res/values-eo/strings.xml b/app/src/main/res/values-eo/strings.xml
index a1cb2ca3..eb59ac64 100644
--- a/app/src/main/res/values-eo/strings.xml
+++ b/app/src/main/res/values-eo/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Recents</string>
     <string name="show_recents">Show recents</string>
     <string name="pdf_viewer">PDF Viewer</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">Malfermi kiel</string>
     <string name="text_file">Teksta dosiero</string>
diff --git a/app/src/main/res/values-es/strings.xml b/app/src/main/res/values-es/strings.xml
index e68abd4b..61e2d12a 100644
--- a/app/src/main/res/values-es/strings.xml
+++ b/app/src/main/res/values-es/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Recientes</string>
     <string name="show_recents">Mostrar recientes</string>
     <string name="pdf_viewer">PDF Viewer</string>
+    <string name="invert_colors">Invert colors</string>
 
     <!-- Open as -->
     <string name="open_as">Abrir como</string>
diff --git a/app/src/main/res/values-et/strings.xml b/app/src/main/res/values-et/strings.xml
index e28b9df2..faf676c1 100644
--- a/app/src/main/res/values-et/strings.xml
+++ b/app/src/main/res/values-et/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Viimati kasutatud</string>
     <string name="show_recents">Näita viimatikasutatud faile</string>
     <string name="pdf_viewer">PDF-failide näitaja</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">Ava kui</string>
     <string name="text_file">tekstifailina</string>
diff --git a/app/src/main/res/values-fi/strings.xml b/app/src/main/res/values-fi/strings.xml
index d7e382f2..a9b2332b 100644
--- a/app/src/main/res/values-fi/strings.xml
+++ b/app/src/main/res/values-fi/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Viimeaikaiset</string>
     <string name="show_recents">Näytä viimeaikaiset</string>
     <string name="pdf_viewer">PDF Viewer</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">Avaa…</string>
     <string name="text_file">Tekstitiedostona</string>
diff --git a/app/src/main/res/values-fr/strings.xml b/app/src/main/res/values-fr/strings.xml
index 584f9cde..13e9da3b 100644
--- a/app/src/main/res/values-fr/strings.xml
+++ b/app/src/main/res/values-fr/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Récents</string>
     <string name="show_recents">Afficher les récents</string>
     <string name="pdf_viewer">Visionneuse de PDF</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">Ouvert comme</string>
     <string name="text_file">Fichier texte</string>
diff --git a/app/src/main/res/values-gl/strings.xml b/app/src/main/res/values-gl/strings.xml
index e1c77047..7fe62230 100644
--- a/app/src/main/res/values-gl/strings.xml
+++ b/app/src/main/res/values-gl/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Recents</string>
     <string name="show_recents">Show recents</string>
     <string name="pdf_viewer">PDF Viewer</string>
+    <string name="invert_colors">Invert colors</string>
 
     <!-- Open as -->
     <string name="open_as">Abrir como</string>
diff --git a/app/src/main/res/values-hi/strings.xml b/app/src/main/res/values-hi/strings.xml
index 39be48a4..76b44367 100644
--- a/app/src/main/res/values-hi/strings.xml
+++ b/app/src/main/res/values-hi/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">हाल के</string>
     <string name="show_recents">हाल ही में दिखाएं</string>
     <string name="pdf_viewer">PDF Viewer</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">इस रूप में खोलें</string>
     <string name="text_file">टेकस्ट फ़ाइलें</string>
diff --git a/app/src/main/res/values-hr/strings.xml b/app/src/main/res/values-hr/strings.xml
index bb28be5e..a00b1fe7 100644
--- a/app/src/main/res/values-hr/strings.xml
+++ b/app/src/main/res/values-hr/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Nedavni</string>
     <string name="show_recents">Pokaži nedavne</string>
     <string name="pdf_viewer">PDF Viewer</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">Otvori kao</string>
     <string name="text_file">Tekstualna datoteka</string>
diff --git a/app/src/main/res/values-hu/strings.xml b/app/src/main/res/values-hu/strings.xml
index d63d2c07..4568e878 100644
--- a/app/src/main/res/values-hu/strings.xml
+++ b/app/src/main/res/values-hu/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Frissek</string>
     <string name="show_recents">Frissek megjelenítése</string>
     <string name="pdf_viewer">PDF Viewer</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">Megnyitás másként</string>
     <string name="text_file">Szövegfájl</string>
diff --git a/app/src/main/res/values-in/strings.xml b/app/src/main/res/values-in/strings.xml
index 6407aa3c..f3172126 100644
--- a/app/src/main/res/values-in/strings.xml
+++ b/app/src/main/res/values-in/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Recents</string>
     <string name="show_recents">Show recents</string>
     <string name="pdf_viewer">PDF Viewer</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">Buka sebagai</string>
     <string name="text_file">Berkas teks</string>
diff --git a/app/src/main/res/values-it/strings.xml b/app/src/main/res/values-it/strings.xml
index a1cca164..29876c5c 100644
--- a/app/src/main/res/values-it/strings.xml
+++ b/app/src/main/res/values-it/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Recenti</string>
     <string name="show_recents">Mostra i recenti</string>
     <string name="pdf_viewer">Visualizzatore PDF</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">Apri come</string>
     <string name="text_file">File di testo</string>
diff --git a/app/src/main/res/values-ja/strings.xml b/app/src/main/res/values-ja/strings.xml
index f3014dbb..74de8940 100644
--- a/app/src/main/res/values-ja/strings.xml
+++ b/app/src/main/res/values-ja/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Recents</string>
     <string name="show_recents">Show recents</string>
     <string name="pdf_viewer">PDF Viewer</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">ファイル形式を指定して開く</string>
     <string name="text_file">テキストファイル</string>
diff --git a/app/src/main/res/values-ko-rKR/strings.xml b/app/src/main/res/values-ko-rKR/strings.xml
index e7efb610..113b26a3 100644
--- a/app/src/main/res/values-ko-rKR/strings.xml
+++ b/app/src/main/res/values-ko-rKR/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Recents</string>
     <string name="show_recents">Show recents</string>
     <string name="pdf_viewer">PDF Viewer</string>
+    <string name="invert_colors">Invert colors</string>
 
     <!-- Open as -->
     <string name="open_as">Open as</string>
diff --git a/app/src/main/res/values-lt/strings.xml b/app/src/main/res/values-lt/strings.xml
index ba47e23c..944dae1f 100644
--- a/app/src/main/res/values-lt/strings.xml
+++ b/app/src/main/res/values-lt/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Recents</string>
     <string name="show_recents">Show recents</string>
     <string name="pdf_viewer">PDF Viewer</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">Atverti kaip</string>
     <string name="text_file">Tekstinis failas</string>
diff --git a/app/src/main/res/values-nb-rNO/strings.xml b/app/src/main/res/values-nb-rNO/strings.xml
index d99589e3..4e9cf4a9 100644
--- a/app/src/main/res/values-nb-rNO/strings.xml
+++ b/app/src/main/res/values-nb-rNO/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Nylige</string>
     <string name="show_recents">Vis nylige</string>
     <string name="pdf_viewer">PDF Viewer</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">Åpne som</string>
     <string name="text_file">Tekstfil</string>
diff --git a/app/src/main/res/values-nl/strings.xml b/app/src/main/res/values-nl/strings.xml
index aa190b61..6271d1f5 100644
--- a/app/src/main/res/values-nl/strings.xml
+++ b/app/src/main/res/values-nl/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Recent geopend</string>
     <string name="show_recents">Recente items tonen</string>
     <string name="pdf_viewer">PDF-viewer</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">Openen als</string>
     <string name="text_file">Tekst</string>
diff --git a/app/src/main/res/values-pl/strings.xml b/app/src/main/res/values-pl/strings.xml
index 2ff9596d..b8e50801 100644
--- a/app/src/main/res/values-pl/strings.xml
+++ b/app/src/main/res/values-pl/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Ostatnie</string>
     <string name="show_recents">Pokaż ostatnie</string>
     <string name="pdf_viewer">Czytnik PDF</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">Otwórz jako</string>
     <string name="text_file">Plik tekstowy</string>
diff --git a/app/src/main/res/values-pt-rBR/strings.xml b/app/src/main/res/values-pt-rBR/strings.xml
index 6f4b799e..a0e64dab 100644
--- a/app/src/main/res/values-pt-rBR/strings.xml
+++ b/app/src/main/res/values-pt-rBR/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Recentes</string>
     <string name="show_recents">Mostrar recentes</string>
     <string name="pdf_viewer">Visualizador de PDF</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">Abrir como</string>
     <string name="text_file">Arquivo de Texto</string>
diff --git a/app/src/main/res/values-pt/strings.xml b/app/src/main/res/values-pt/strings.xml
index 484b9bec..00e2882a 100644
--- a/app/src/main/res/values-pt/strings.xml
+++ b/app/src/main/res/values-pt/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Recentes</string>
     <string name="show_recents">Mostrar recentes</string>
     <string name="pdf_viewer">PDF Viewer</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">Abrir como</string>
     <string name="text_file">Texto</string>
diff --git a/app/src/main/res/values-ro/strings.xml b/app/src/main/res/values-ro/strings.xml
index e5eb3e35..81e62528 100644
--- a/app/src/main/res/values-ro/strings.xml
+++ b/app/src/main/res/values-ro/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Recente</string>
     <string name="show_recents">Afișați recentele</string>
     <string name="pdf_viewer">PDF Viewer</string>
+    <string name="invert_colors">Invert colors</string>
 
     <!-- Open as -->
     <string name="open_as">Deschide ca</string>
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index 32a4baaa..bc643e92 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Недавнее</string>
     <string name="show_recents">Показывать недавнее</string>
     <string name="pdf_viewer">Просмотр PDF</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">Открыть как</string>
     <string name="text_file">Текст</string>
diff --git a/app/src/main/res/values-sk/strings.xml b/app/src/main/res/values-sk/strings.xml
index 894300ee..c99bfd70 100644
--- a/app/src/main/res/values-sk/strings.xml
+++ b/app/src/main/res/values-sk/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Nedávne</string>
     <string name="show_recents">Zobraziť nedávne</string>
     <string name="pdf_viewer">Prehliadač PDF</string>
+    <string name="invert_colors">Invertovať farby</string>
 
     <!-- Open as -->
     <string name="open_as">Otvoriť ako</string>
diff --git a/app/src/main/res/values-sv/strings.xml b/app/src/main/res/values-sv/strings.xml
index 42b33e42..b1209b06 100644
--- a/app/src/main/res/values-sv/strings.xml
+++ b/app/src/main/res/values-sv/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Nyss</string>
     <string name="show_recents">Visa nyligen</string>
     <string name="pdf_viewer">PDF Viewer</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">Öppna som</string>
     <string name="text_file">Textfil</string>
diff --git a/app/src/main/res/values-ta/strings.xml b/app/src/main/res/values-ta/strings.xml
index 13a43277..5d639cfc 100644
--- a/app/src/main/res/values-ta/strings.xml
+++ b/app/src/main/res/values-ta/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">சமீபத்தியவை</string>
     <string name="show_recents">சமீபத்தியவற்றைக் காட்டு</string>
     <string name="pdf_viewer">PDF Viewer</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">இவ்வாறு திற</string>
     <string name="text_file">உரை கோப்பு</string>
diff --git a/app/src/main/res/values-tr/strings.xml b/app/src/main/res/values-tr/strings.xml
index 0a2a87cb..9e03de38 100644
--- a/app/src/main/res/values-tr/strings.xml
+++ b/app/src/main/res/values-tr/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Son dosyalar</string>
     <string name="show_recents">Son dosyaları göster</string>
     <string name="pdf_viewer">PDF Görüntüleyici</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">Farklı aç</string>
     <string name="text_file">Metin dosyası</string>
diff --git a/app/src/main/res/values-uk/strings.xml b/app/src/main/res/values-uk/strings.xml
index 9641a199..6f18a30d 100644
--- a/app/src/main/res/values-uk/strings.xml
+++ b/app/src/main/res/values-uk/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Останні</string>
     <string name="show_recents">Показати останні</string>
     <string name="pdf_viewer">Переглядач PDF</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">Відкрити як файл</string>
     <string name="text_file">Текстовий</string>
diff --git a/app/src/main/res/values-zh-rCN/strings.xml b/app/src/main/res/values-zh-rCN/strings.xml
index 89995240..4da0225d 100644
--- a/app/src/main/res/values-zh-rCN/strings.xml
+++ b/app/src/main/res/values-zh-rCN/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">最近</string>
     <string name="show_recents">显示最近</string>
     <string name="pdf_viewer">PDF 查看器</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">打开为</string>
     <string name="text_file">文本文件</string>
diff --git a/app/src/main/res/values-zh-rTW/strings.xml b/app/src/main/res/values-zh-rTW/strings.xml
index 529f1d59..3eb690ab 100644
--- a/app/src/main/res/values-zh-rTW/strings.xml
+++ b/app/src/main/res/values-zh-rTW/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Recents</string>
     <string name="show_recents">Show recents</string>
     <string name="pdf_viewer">PDF Viewer</string>
+    <string name="invert_colors">Invert colors</string>
     <!-- Open as -->
     <string name="open_as">開啟成</string>
     <string name="text_file">文字檔案</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 88c42302..fdeffd9b 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -14,6 +14,7 @@
     <string name="recents">Recents</string>
     <string name="show_recents">Show recents</string>
     <string name="pdf_viewer">PDF Viewer</string>
+    <string name="invert_colors">Invert colors</string>
 
     <!-- Open as -->
     <string name="open_as">Open as</string>