^^^ and if you don't like the silver color on the front buy some spray paint and paint over it...
Spray paint does not release heat... do not use over the shelf spray paint on an intercooler or radiator.
Krylon makes a "commercial" flat black paint and does not harm efficiency. Several 1.8t guys have done that here locally and not had a problem.Completely spray painting and entire core can actually decrease its thermal efficiency.
The only way to effectively color a core without inhibiting efficiency is to anodize it, which will actually add an oxidation layer to the aluminum. The color essentially becomes part of the metal, so it will disipate heat in the same manner that the metal does.