If i follow the user guidelines for the notification bar design it has to be dark gray (for android < 2.3) But on sense, the notification bar is black, so my icon is almost invisible.
Is there a way to detect the senseUI to create a new resources folder just for senseUI ?
Not specifically Sense but you can check the Build strings and match them against known SenseUI phones. Build.Model is probably your best bet. http://developer.android.com/reference/android/os/Build.html
An alternative would be to let the user change which one gets displayed by placing it in your options screen.