First Tyranid finished as a road map for the rest. The rest of them will be assembly line painted... first the pink-purple of the face and joints, then the blue-purple of the body, then the red, then dark grey for the armor parts... a wash of a dark purple to tie it all together and then a bit of light grey highlighting on the dark armor to, hopefully, make it look more detailed.
2 attached images. Click to enlarge.