Steeds Of Slaanesh

As an antidote to the hugeness of Big Dredd, i've gone for a wee break with something small - Games Workshops Steeds Of Slaanesh.
I'd built a few before but that was yonks back when they were all metal.
Now we get a box of five plastic one's and, boy, is there a marked difference - amazing detail on both steeds and riders and part fit was excellent.
Once assembled and primed though, finding it a bit of a head-scratcher as what colour scheme to go for with the beasts.