I built a ball with metallic paints.
This kit has some ABS parts. I coated them as a first layer with the primer of Tamiya. And I painted it with
- Mr. Color 8, silver (for the body)
- Mr. Color 75, metallic red (for the red parts)
- Mr. Color 28, steel (for the canon)
A build custom GP base is applicable to this. The manual is saying that you can also use an Action Base 2.