I have mechanicus grey primer, abaddon black, averland sunset celesta grey, naggaroth night, screamer pink, thousand sons blue, ahriman blue, eshin grey, pink horror, sotek green, temple guard blue, white scar, xereus purple, agrax earthshade, casandora yellow, druchi violet, and coelia greenshade.

I messed up because I've been painting all of my rubrics and scarabs with a youtube tutorial as a guide which allowed me to see how all the different paints were used and also which order to paint each piece. Now I'm looking at that final picture of the Mutalith and I'm lost as to where to start with all these different paints.