No, just scale color. As far as I know, unless you save scum rainbowtox till your fingers bled and a sylvanol for eyes there's no way to get full red coloring. The only other thing I know that gives red are Ovir Ace/Positive and Red Pill for skin, scales and penis with Ovir.
If you want to get red skin (and by extension penis) do Ovir, then remove the scales, regrow them, or grow fur. Vag has to be rainbowtox'd, though, as far as I know.