Here are two of my Polar Lights Robots from Lost in Space of course. I built the Robot kit both ways, first season & second/third season. I like them both as much so I built them both.
They were both painted with Testors Silver. I used Dupli-Color Charcoal Silver for second/third seasons robot arms/legs and just plain Grey enamel for first season robot. Turned up arm on first season for a slightly different look when displayed together.
The bases also compliment each robot. I kept the base toned down using earth tones and shading for first season robot while the second/third season robot received more of a martian scheme using a muted moldy Green & Tan color.
John Dunar