Are you using European tvs? That's the only thing I can think of. Maybe you can force PAL/NTSC in the loader in order to force the colors to be correct. Maybe you're connecting RCA cables to composite, which would probably also give wrong colors.

 

Ok I just discovered that the kids tv plays ntsc games in color so I set the loader to force ntsc now every game works in color. Except Just Dance 2017 it just freezes not instead of playing in black and white like before.