Indeed, Enfields were one of the earlier users of polychromatic paints amongst motorcycle makers,
they had a polychromatic green tank prewar, and it was described as such in the brochure,
and a range of such greys and reds and greens and blues through the late 40s and then 1950s.
Sunbeam had a poly grey on some of those big 2 cyl ohc gentlemans tourers in the late 1940s.
Triumph had their 'silver sheen' for 1950, and then various blues and greys, and it spread like wildfire after that.
Bicycle makers were huge users too, once they cottoned on to it.
Candy apple was an American term back in the 1960s, no custom junk/go faster flames here at that time. mostly just brushing Belco.
Maybe, but AMC/Norton did some of their compy bikes in Candy Red in the 1960s, and the wording in the brochure was exactly that.
And there were also blues and greens too. Aimed at the US market obviously, you couldn't even buy them in Britain ?
Then the japanese makers got hold of it....
Cheers.