So I picked up a used helmet, mostly because it was incredibly cheap, and because it had an intercomm headset in it - which was really all I wanted.  So the helmet arrives from the US (BTW, NEVER, EVER have things shipped via UPS to you.  The brokerage fees they tack on are brutal - $45 for a $25 helmet) and I take it out and find its an ugly red BMW System V helmet - worth about $750 BEFORE the headset was installed.  At this point, I changed my mind on ripping the headset out and instead tore the helmet down to its bare components, sprayed 3 coats of Krylon plastic paint on it, and then multiple coats of paint to match the two colors on my bike and then 3 coats of clear, with wet sanding between phases.  For a rattlecan paint job, it came out pretty amazing.  Next event I'll bring it by with detailed instructions.  Takes about a week to do because you have to wait for paint to cure, but not hard.

Awesome...post up some before and afters if you have 'em...

No befores, but it was kinda scuffed.  I'll see what I can do with afters.