It would depend on what chapter you want.
Dark Angels - with these you won\'t be able to highlight a lot as the armour is supposed to be quite dark, so I would rule them out.
Ultramarines - i find this the other way around they have quite a flat colour so not much movement in the dark/lightnes there.
Blood Angels - I think these would be the best, you can start off with a deep red and build it up to quite a bright red, without them looking wierd.
I personally at the moment am painting Salamanders, again you can start off with a dark green, and go up lighter a lot more than dark angels.
oooooooh choices........
