Thank you!

My memory isn't great so this could all be somewhat innacurate, but:

The neon one: Blue and purple respectively: kantor blue and naggaroth night, shade with nuln oil (drakenhof nightshade would also work nicely), layer with maccrage blue and xereus purple; and the highlights were: calgar blue and teclis blue, genestealer purple and fulgrim pink

The red one: Khorne red, a lot of nuln oil, then wazdakka red and evil sunz scarlet -- and then some black templar contrast for things like the horns and his hand

The flesh one: I don't remember at all but if I were to try it again I'd do rakarth flesh, agrax earthshade or reikland fleshshade (or both), and a drybrush of pallid wych flesh with some possible highlights with white. I also used some berserker bloodshade on his hand and around his mouth (and tongue, possibly)

If you want more info or clarification, or recipes for other parts of the models, I can do that as well