Original XBOX - Color banding issues

[IsakaTenshou]

I've got an original XBOX and I'm having weird color banding issues. It appears green is being output differently than red/blue. The problem is more pronounced when connected with HD cables. Tried swapping cables but issue persists.
Here's some pictures:

Avalaunch SD

XBMC SD

Ninja Gaiden SD

Avalaunch HD

XBMC HD

Ninja Gaiden HD

Any suggestions for a fix would be greatly appreciated. Thanks!