I feel an M3 deserves a nice understated colour. Don't get me wrong, Dakar Yellow, Java Green, Fire Orange, etc all look good, but I feel that after a while I would tire of a colour like that on my M3.
I personally think that M3's look awesome in classy yet different colours like Brilliant White, Moonstone, Ruby Black etc.
2011 E90 M3 ZCP - Individual Moonstone/Individual Amarone Extended/Individual Piano Black With Inlay:LINK!!!
1994 Euro E36 M3 Sedan - Daytona Violet/Mulberry:LINK!!!