From what I have found so far people seem to go for the actual blue color of the vipers and it is just too damn bright.
I would love a cobra commander but I cannot imagine spending anytime in that helmet with the faceplate. Too darn hot and confining if you made it look good. Otherwise it would look too big.
I think I may work on a Viper costume when I am done with 40k Tau costume.
I always only bought the Cobra action figures because they were so cool looking, anyone remember B.A.T. awesome... and the Vipers??? they were great, Id love to see pics if anyone has made costumes....