I think it's been done already, but Okami (US) on a PAL Wii works, with the usual RGB red tint. Use component or composite and you'll be fine.
Obligatory rant: Damn, Capcom butchered this game something fierce. What an utter disgrace, they ought to be ashamed of themselves for giving RAD not enough resources. I'm 8 hours in (haven't slept much), and I'm certainly having fun, but this just screams bare-bones cash-in. Not a good way to give your 'overlooked artsy game' a second chance. Still, the game is loads of fun, but certainly not thanks to Capcoms treatment.