I barely understand you, sorry.
Just start the ELF of 'GS Mode Selector 0.36' and choose the V-Mode of your region.
If the PS2-games which run in color are PAL, try to force PAL60 to your black&white-games (since those should be NTSC then).
It could be vice versa, so you must choose the V-Mode according to your TV-Region/Mode.
I hope I expressed it in an understandable way.
PS2 V7/DMS3 V2 (FW:2.4b7); Seagate Baracuda 200GB
PS2 V7/CC1.0 (FW:34 hacked v2 BM:2.1.6); Maxtor DiamondMAX9 PLUS 160GB
PS2 SCPH-30004R; NoMod+NoLaser
3xSony MC 8MB
MAX/Datel 16MB with Boot-CD
Custom FMCB 1.8b+ Beta-Build, my AIO 0.5, Sony&xRhino-Linux