Recently I changed the target and minsdk version in my manifest from 4 to 11 to comply with Google's Tablet compatibility rules.
Now my radiobuttons look different...almost transparent until you click on it. When I switched back to 4 then all returns to normal. Can anyone help? The radiobuttons really look off and may lead to user to think they are not functioning correctly.
I recommend you to upgrade. There were many important improvements since v1.90.
Views look differently in Android 4 (holo style). You should use the "default" colors for the activity and other views. I'm not sure whether the default color property was available in v1.90.