Note that only the outer, 'spoked' face of each wheel was painted red. The inner faces were the usual steel colour. I remember building and painting the old Monogram kit as Gentille's, back in the early 1980s, and being pulled up at an IPMS meeting about the red wheels, which I'd deduced from B&W pics before seeing the colour pics. I was rather pleased to be proved right when I found the first colour pic a few months later !