Hey D, just my 2 cents - yep, if you can hold out I'd wait to get 2011 compliance plates just to help with resale later down the track, especially since there's only 2 months to go!
I've always preferred lighter colour cars just for practicality purposes (easier to keep them looking clean) but a black/black combination would look awesome, especially on those new rims that come with the IS 350 F-Sport!