After hand painting the two Martian tri-lenses with clear blue, green & red, I spray painted the assembled Martian with a flat gray primer which to days to
dry. I think I got a mild chemical reaction between the plastic and paint but after a few days, all was well.
I then painted the entire figure
a pumpkin orange followed by a wash of dark brown in acrylic craft paint to highlight the multitude of veins on the creature's surface. I let this dry over night and then I came back with a gentle scrubbing with a dry cloth to remove the paint on the veins
to bring out the gray layer beneath which highlighted the veins quite nicely.
I painted the base (which was made of clear plastic) a flat
brown with several washes of gray & black to bring out the wooden floor detail.
I painted the Martian tentacle and “viewer”
a copper color as seen in the film and Super Glued them in place on the base. Ditto with the two books although they were painted green and blue, with their titles highlighted in gold.