Android Question Having problems with transparency when targetSdkVersion="14"

I'm having problems with buttons, radio buttons and edit text views (inside panels) when I have targetSdkVersion="14" set in the manifest editor.
Buttons and edit texts are semi transparent and I can't always see the radio buttons 'selection circle'.
It works fine if I set targetSdkVersion="10".

targetSdkVersion="10"


targetSdkVersion="14"


I'm using a Nexus 7.
Any ideas ?