This is the paint scheme I used for one of our STLs!
Undercoat: Vallejo Mecha Black
Base: Turquoise and Turquoise Blue, then sponge on Black Metal, then Thrash Metal. Liberal wash of Nuln
Plasma: Art Black, then Stuart Semple’s glow in the dark pigment – in this instance pink, believe it or not. Looks pink until it’s charged then it glows green.
Weathering: Scale75 Floww Turquoise Blue mixed with Titanium White, then a brush was dragged downwards through it with Scale75’s odourless thinners on it.