Nice take on these

The natural, subdued look suits them and makes a nice contrast with the white Tau supplied gear.
I was immediately taken by this new iteration of the Stingwings myself and bought the squad without any purpose (for now). I actually liked them in their old form as well, but they were kind of an odd and not very popular niche in the Tau list and they were very rarely fielded. Hopefully we'll see more of them now.
My plan is to paint mine in a wasp/hornet scheme. The more garish the better. If only because I want them to look decidedly different from my alien bug horde, which is painted in mostly browns.
Although a throwback to the regretfully OOP Spugs by Spriggan (their studio models were all painted bright green, like grashoppers) would be cool too. And I've also seen some really stunning ones in red too.