i suppose it depends on how brave or brash you want to go?. Some people go all out to get noticed but if it was me i would go for a individual colour that you dont see on a 6?.
Some of the M8 individual colours are quite cool, especially some of the blue's!
https://visualizer.bmw-individual.co...=en&dc=1-5#top
just tried the link and it doesnt take you to the colours, just select an 8 series and choose special paints. it brings up a full list of amazing colours !