If it's an NTSC ROM, you do NOT run it in PAL mode. Do NOT WiiFrii it to PAL, leave it as it is (NTSC), and just run it through Waninkoko's patcher.
Running it normally through GeckoOS 1.06 will display full color on NTSC/AV if it's an NTSC ROM.
Running it normally through GeckoOS 1.06 will display full color on NTSC/AV if it's an NTSC ROM.