Go into system settings. In the upper right corner you will see you System Menu version. Something like 4.1U or 4.1E. U= USA and E=Europe. If you have a U you are NTSC if you have anything else your on PAL.
Running games out of region will give you a black and white video output. There is a fix but each loader is different. Just poke around in which ever one you are using and look for video setting and set it to the region of the game. Usually this can be done globally or per game basis.
Hope that helps.