diff --git a/app/src/main/res/values-cy/strings.xml b/app/src/main/res/values-cy/strings.xml
index 09f01c415..d1d6b180e 100644
--- a/app/src/main/res/values-cy/strings.xml
+++ b/app/src/main/res/values-cy/strings.xml
@@ -1092,6 +1092,17 @@
     <string name="export_theme">Export the theme</string>
     <string name="export_theme_title">Tap here to export the current theme</string>
     <string name="theme_file_error">An error occurred when selecting the theme file</string>
+    <string name="label_theme_picker">Theme Picker</string>
+    <string name="pref_theme_summary">Select a pre-installed theme</string>
+    <string name="pref_theme_title">Themes</string>
+    <string name="pref_colored_navigation_bar_summary">Apply the primary color to the navigation bar</string>
+    <string name="pref_colored_navigation_bar_title">Navigation bar color</string>
+    <string name="pref_background_color_summary">The underlying color of the app’s content.</string>
+    <string name="pref_background_color_title">Background color</string>
+    <string name="pref_accent_color_summary">Accents select parts of the UI.</string>
+    <string name="pref_accent_color_title">Accent color</string>
+    <string name="pref_primary_color_summary">Displayed most frequently across your app.</string>
+    <string name="pref_primary_color_title">Primary color</string>
     <string name="export_bookmarks">Export bookmarks to the instance</string>
     <string name="import_bookmarks">Import bookmarks from the instance</string>
     <string name="user_count">User count</string>