ColorPrefUtil to change color preference of views & theme.
-Change theme.
-Change background colors of views.
-Change text colors of views (TextView, EditText, Button).
-Change icon tint colors.
-Change colors of TabLayout, NavigationView.
-Change theme.
-Change background colors of views.
-Change text colors of views (TextView, EditText, Button).
-Change icon tint colors.
-Change colors of TabLayout, NavigationView.