use proper text color at MimeTypesActivity placeholders

app/build.gradle

@@ -64,7 +64,7 @@ android {
 }
 
 dependencies {
-    implementation 'com.github.SimpleMobileTools:Simple-Commons:3aade6f350'
+    implementation 'com.github.SimpleMobileTools:Simple-Commons:58574dd952'
     implementation 'com.github.tibbi:PdfViewPager:d2af24208d'
     implementation 'com.github.Stericson:RootTools:df729dcb13'
     implementation 'com.github.Stericson:RootShell:1.6'

app/src/main/kotlin/com/simplemobiletools/filemanager/pro/activities/MimeTypesActivity.kt

@@ -71,6 +71,8 @@ class MimeTypesActivity : SimpleActivity(), ItemOperationsListener {
         }
 
         mimetypes_fastscroller.updateColors(getProperPrimaryColor())
+        mimetypes_placeholder.setTextColor(getProperTextColor())
+        mimetypes_placeholder_2.setTextColor(getProperTextColor())
     }
 
     override fun onResume() {

app/src/main/kotlin/com/simplemobiletools/filemanager/pro/extensions/Activity.kt

@@ -103,5 +103,3 @@ fun AppCompatActivity.hideSystemUI(toggleActionBarVisibility: Boolean) {
         View.SYSTEM_UI_FLAG_FULLSCREEN or
         View.SYSTEM_UI_FLAG_IMMERSIVE
 }
-
-fun Activity.getUiMode() = resources?.configuration?.uiMode?.and(Configuration.UI_MODE_NIGHT_MASK)