22k miles in 44 years

[EXNODRAMANOTCH]

My non-SSP toy is this 1967 M715 (looks like a big Tonka truck to to me, hence the door decals with the name of my cabin) that I have had for 2 years now and I have put 1k miles on. The paint is from 1985 and I'm contemplating repainting it. There is zero rust, put a couple of dings and chalky paint. Should I leave it as is (I kind of like the patina) or paint it? And if I do repaint it, should I go back to its factory issued olive drab (served from 1967-85) hue or the fire department red and white paint scheme (served from 1985-05) that is on it now?