NGP vs NGPC difference?

[FluBBa]

What makes a NeoGeo Pocket game qualify as a "Color" game?
Is it only the byte in the header which says that the Bios should start the machine in Color mode?
My question was raised because I just saw Samurai Shodown and Dokodemo Mahjong actually has color modes.

[ElBarto]

It's the byte at 0x200023 in the rom (Monochrome = 0x00 / Color = 0x10).
http://ngpc.roarvgm.com/docs/ngpcspec.txt

[FluBBa]

Sorry for the late reply, I just now read through some source code and saw that some emulators "hack" the headers to set Doko Demo Mahjong to mono mode.
Doko Demo Mahjong has got 0x10 at address 0x23.