This is the working color study I have going now, and the pictures are not doing the paint any justice. This should be fixed in the future when I can get a dedicated photo space for this type of thing. Obviously it still needs some finishing touches, but overall once the basecoat is good and solid it's relatively quick to do.
When I first started this I was really struggling to get a nice red for the armor, everything before this was either too bright or too dark. Also this is the first real GW wash work I've done... I'm used to using the old school inks or thinned paint to shade. I think for the Aspiring Champs I'll keep the robes black, for the regular CSM a cream colored robe should be good. For squad markings I have the idea of using parts of the chaos star with the matching graphic for the Rhinos as well.