Are they all colorways that have a respective skull/other sculpt match to them? What colorways are they? (I can identify a few but not sure about every single one of them)
from top/left to bottom/right:
slushy red, p1/gum purple, midnight blue
p1/gum purple, ghost white, milk blue
mint gum, juice yellow, painful red
these names are mostly assumed from looking at cc's old sale lists.
not sure about p1 vs gum. i have a skull+esc+fn set that's supposed to be gum purple, but they are very close to my P1 caps. one blank is a little lighter than the other, but there was also a lot of variance in shades between P1 purple skulls, so who knows.
i'm guessing cc made corresponding skulls and fn (and maybe wasd??) for all these colors. if you look at cc's old sales, he had skulls available for some of them, and those were "extras". personally i have just a couple of matching topre skulls and/or fns.