How do I fix a game that plays in black in white?

[DNTGJG]

I had a game that was a PAL version,I used some PAL/NTSC conveter I found in the PS2 tools section to switch it to NTSC but when I booted up the game it was in black in white? Do I need some kind of Y-Patch fix or something??? If so where can I get it? If not what do I need to do?

Thanks for any help in advance.....