sorry gents - haven't joined the thread because I was stuck out west last weekend.  However to do a small hijack - email Red Alert on this forum - he is one of the best air brush guys in Australia and really knows his shit about painting helmets - which is the best way to go.  Nice guy - will let you know what can and can't be done.  But I have also searched for plain colour helmets and they seem to be making a come back with some of the cheaper brands like THH etc???  I thought it was easy enough to find white ones also for "pimping" suitably later?
Rossco