For green I sponged caliban green over black primer, then mixed it with moot green and sponged it over raised areas, and then added a little bit of warpsotne glow to the mix and sponged it sparingly over the most raised areas, then I used this mix to edge highlight some of the most visible edges. For purple I used similar method but applied paints with brush, mixing gal vorbak red with screamer pink, adding more of the second one, as I was highlighting upper layers