I was in the exact same boat white or black but the amount of issues with the paint on black drove me away. I really wanted white with black interior but that was in 10 not 09 but the grey is nice too!

 

My first choice was White, but in 2009 they didn't offer White on Black interior so I went with the Black on Black. I do like the black but its a bugger to keep clean. I think 2010 they have White on Black...if that is correct then hands down White.

 

I went with the Blue Slate. Probably just as hard as white and black to keep clean IMHO. White with Graphite interior would have been my second choice if I could not this one.

I had the Graphite and Diamond Graphite on my 06 and 08 respectively and they always looked really sharp, even when dirty, I was just tired of gray. Last 5 cars were gray or silver, lol.