I have same thing on one console i modded with Mars GM816HD.
Exactly same as you described.
I think that when making the clone chips, they dont bother testing all of the models with it, maybe couple. That's maybe why it does'nt work properly. And i dont know one whick it works with.
But well, buy cheap, get cheap
But there's one solution for the color fix. Get Messiah installation diagrams and there you see hardware-based colorfix. Just one jumper wire.
I'm installing FMCB in Finland. I'm installing modchips for PS2, Xbox360, Gamecube and Wii, in Finland. I live in Finland.
I love Finland. My country is Finland. I work in Finland. I was born in Finland.