All the clear parts on Sideswipe/Sunstreaker, coloured or otherwise are moulded in clear plastic. The colour is easy to strip (kind of) and easy to recolour. I don't see how it is difficult to get G2 Sideswipe from a regular release (and wouldn't pay that insane amount).
I'd do it just to prove you guys wrong, but the scheme hurts my eyes![]()