Any project (including an empty one) with 32-bit display buffer enabled looks very dark when it's run on Samsung Galaxy S3 Mini. This can't be captured with the DDMS screenshot, because the colors look normal there. When the game is running and the home button is pressed, the colors switches to normal just before the game is sent to the background.

Tested device:
Samsung Galaxy S3 Mini (GT-i8190, NovaThor U8500) with Android 4.1.1

Unity Versions:
4.1.2f1 (911c7369eeac)
4.2.0a4 (a3c168d565bb)
4.2.0b1 (8bb69ea9f249)