So what you are saying is that in a pitch black environment, where color has no effect on anything, something painted black will radiate heat more than something painted white.
I think you are think of surfaces radiating heat from the sun, not surfaces radiating heat from within.
Exactly. If there is a temperature difference. To experience it, stand behind a window on a col..d black night and you will feel your body heat radiating out to the night sky.
I think the factor for surface color is called emissivity. I am going to check on that.
