My painting technique has a flaw...takes bloody long to dry. Here's a WIP photo! You can actually spy the one without the carapace done yet. The skin is based on Bleached Bone followed by a wash of Warlock Purple. Both stages require a lot of drying time!
Carapace is Chaos Black. I am still deciding on the base rim colour but I reckon it'll be a dark gray to contrast with the lighter skin tone.