I really went with an Old Scool Slaanesh colour scheme for him. Nowadays, it seems that Slaanesh = black and pink, but it should be so much more. Slaanesh was, in the RoC days, all about pastel colours, not just pink and purple, but also garish combinations and just an abundance of tones and colours. I figured the addition of yellow on his tail and glove would really make him stand-out and it was also something I've yet to see on this particular figure.
For now I can use him for Warband games in RoC, but of course he will eventually fit into my "crazy colourful" Chaos army. It gives you a taste of what I'm aiming for!