Looking at this from a design perspective, i'll say paint it black. Two tone colour schemes are incredibly effective when used properly. At the moment you have 3 tones there, black, silver & clear. If you painted it blue, likewise you would have 3 tones.

Black & Silver all round though would just look mint, imho.

Could also just put a piece of black behind it to retain some depth, plus it's easily reversible if you change your mind.