Show correct launcher icon color in dark mode

app/src/main/java/org/tasks/preferences/fragments/LookAndFeel.kt

@@ -162,7 +162,7 @@ class LookAndFeel : InjectingPreferenceFragment(), Preference.OnPreferenceChange
     }
 
     private fun updateLauncherPreference() {
-        val launcher = themeCache.getThemeColor(preferences.getInt(R.string.p_theme_launcher, 7))
+        val launcher = themeCache.getLauncherColor(preferences.getInt(R.string.p_theme_launcher, 7))
         setupColorPreference(
             R.string.p_theme_launcher,
             launcher.pickerColor,

app/src/main/java/org/tasks/themes/ThemeCache.java

@@ -114,6 +114,11 @@ public class ThemeCache {
         context, index, ContextCompat.getColor(context, ThemeColor.COLORS[index]));
   }
 
+  public ThemeColor getLauncherColor(int index) {
+    return new ThemeColor(
+        context, index, ContextCompat.getColor(context, ThemeColor.LAUNCHER_COLORS[index]));
+  }
+
   public ThemeColor getUntaggedColor() {
     return untaggedColor;
   }