my old Dark Elf WFB army had all kinds of colours, greens, reds oranges and I had a big unit of them black with red spines, if I wasn't going for pure speed I'd definitely try something out, thinking of going for a mottled jungle lizard look on some of them
I have one more unit, but it's 3 dark elf chariots as counts-as cold ones
doubt I'll hunt down any more after that I think 7 is enough!