Hmm, I typed in the original comment thinking about the absorbtion of black surfaces, and that a black surface will absorb more radiation than a white one, so I wasn't really thinking about what I was saying.
Mea Culpa! I stand corrected.
Here is how Encyclopedia Britannica puts it:
...The rate at which a body radiates (or absorbs) thermal radiation depends upon the nature of the surface as well. Objects that are good emitters are also good absorbers (Kirchhoff's radiation law). A blackened surface is an excellent emitter as well as an excellent absorber. If the same surface is silvered, it becomes a poor emitter and a poor absorber.