I've wondered about that. The standard 199A tanks were textured but then you see the Puma bikes with painted tanks. Did Puma sand down the tanks and then paint them?
Where? Varies but around 20K in the shade. Then again you can't really talk about the temp of space. Temp is a measure of energy in matter. Space is (more-or-less) a vacuum. So it doesn't really have a temp. But radiation can cause temperature.