Seraphon Army

Or keeping him as is could be a great way to highlight a rider with it's own extra bright color scheme... 

They are space lizards, and in space it gets cold. He is looking ok for me every model has a point were you think no I did that wrong, then you fill in the little details gold, metal ect. and it all looks better.

Exactly what @Durant said!

I think this will end up being a pretty nice Troglodon.

 

If you really feel it lacks colors that pop (although I think it looks really cool as is) You could paint the membrane between the spikes on his back a brighter color. Those, together with the golds, would really pop with the skin/scale colour. 

He isn't that boring, but if you want to spice him up, then you could add spots to make him look kinda like a snow leopard. That's what I'm doing on my carnosaur.