Searching through the forum, I found the consensus that these terms are fairly distinct. I'm curious why these terms aren't analogous to the scientific and common name (i.e. the G. rosea RCF is a colorform and a distinct subspecies of G. rosea, just, the subspecies name has not been defined yet). Is it because there isn't enough morphological difference between color forms to warrant a scientific subclassifications? According to TKG, the only subclassifications of species is subspecies, so if we find it necessary to define a color form, IMHO it should be scientifically classified as a subspecies as well.