Here's a suggestion for "blacking out" things behind the wire mesh grille . . .

http://www.ebay.com/itm/2-x-Caring-Cohesive-Bandage-BLACK-2in-x-5yds-Self-Adherent-Sports-Tape-/131071805140?_trksid=p2047675.l2557&ssPageName=STRK%3AMEWNX%3AIT&nma=true&si=7Nc2oKV8DfPFcWHsZeeYrqVlK3M%253D&orig_cvip=true&rt=nc
I used this to wrap the hose clamps on the DCAI filters and also to wrap the center support piece to black it out. Much easier than painting things . . . inexpensive . . . reversible!