Crazy climber, thanks for that.
To chime in, I don't care what the outside looks like, as long as the inside is clean. When packing though, I like to take a little pine branch or something similar and whap the heck out of my stove and pots to knock loose the stuff that would otherwise blacken my pack. Yes, I am blackpacker, but when the soot shakes down to your sleeping bag it's annoying. Though I must admit, one of my "stainless" steel pots is still black on the inside from when my fiance decided to cook our dehydrated chili without water.
Don't ask me, it is beyond my comprehension.... Guess it's true love though; the more often I tell the story the more it seems. . . somehow. . . cute?
Seriously though, until I read your post, I considered black pots to be more efficient for energy absorption. But honestly, when you are 15 miles from water, WHY WASTE IT WASHING?
beat the flakes off, and roll on!
-BP