I tested my app on my new device with android 5.1.1. In my SettingsActivity i have a switch. I already read some posts and changed it to android.support.v7.widget.Swit
android.support.v7.widget.Swit
Using SwitchCompat.setSwitchTextAppearance you can set the style for the text that appears inside the switch itself.
SwitchCompat.setSwitchTextAppearance
Add a style something like this and set it using setSwitchTextAppearance:
setSwitchTextAppearance
And you should be able to customize the size, color, etc of your "OFF" text.