I built it years ago. Very easy build.
It basicly "is" just two saucer shaped pieces, especially if you paint it with out being able to see the rather spartan interior.
Very little exterior detail. Antenna thinghy on top. Outline of man sized door and "windows?". Arch shaped sections which require you to paint it from the "inside" if you want the sections to be visible.
Fortunately it does come with black decals for the top "windows?"
It also has a rounded cone shaped decal that I never have figured out what it was supposed to be! Maybe an open door? I lost the directions and booklet before I got around to building it.
I painted mine half silverish (I dont remember the specific color) and left the other half clear.
It fits in well with al my other "saucers". Forbidden Planet, LIS, etc.