I had mine painted black. I regretted it after the second day.
It shows dust on your dash like u wouldn't BELIEVE. Not to mention just one washing.. and no matter HOW SOFT my 100% cotton towel was, it had swirl marks when light hit it. They only got worse... so i had it repainted silver.
The black does retain alot of dust but I don't have any problems with swirl marks I use dust remover towels and it cleans it just fine. I like the black because it looks like it came from toyota that way.
dont base your decision on what they say... i have mine painted carbon blue, and it gets dusty if i dont clean the interior... all you gotta do is keep a cloth with you if youre picky about it. and as for swirl marks, thats what wax is for.