I found a bug in the gamma (when watching some videos) Ipad 4 wifi+4 G

I found a bug in the gamma (Ipad wifi 4 Wifi+4G). It is the same bug as the ipad 2 at release.If you try to play any video (youtube, apple trailer, your own converted video) on the iPad 4, any black images will turn grayish. Ask fixing!!! Support pls help meee...
P.S Sorry for my Eng (see nickname)