That's exactly why I bought the silver (pewter? Dark gray?? Whatever color that is). They only had that, and black in stock. I said, "I'll take the one that isn't black, whatever it is"... My other car is black, and it looks filthy if I don't wash it every other day. Didn't want to deal with that again. My kia, whatever color they call it, doesn't show dirt too bad. Only needs a wash maybe every couple weeks, and it would be way less if I garaged it.
Look into monthly-membership car washes. There are a few in my area where for about $25 a month you can take your car through as often as you want.