A bright red color, which one source said might have been
a combining of "kermes" and "minium".
Kermes (Page: 810)
Ker"mes (?), n. [Ar. & Per. girmiz. See Crimson, and cf. Alkermes.]

1. (Zoöl.) The dried bodies of the females of a scale insect (Coccus ilicis), allied to the cochineal insect, and found on several species of oak near the Mediterranean. They are round, about the size of a pea, contain coloring matter analogous to carmine, and are used in dyeing. They were anciently thought to be of a vegetable nature, and were used in medicine. [Written also chermes.]

2. (Bot.) A small European evergreen oak (Quercus coccifera) on which the kermes insect (Coccus ilicis) feeds. J. Smith (Dict. Econ. Plants). Kermes mineral. (a) (Old Chem.) An artificial amorphous trisulphide of antimony; -- so called on account of its red color. (b) (Med. Chem.) A compound of the trioxide and trisulphide of antimony, used in medicine. This substance occurs in nature as the mineral kermesite

"kermes" reminded me of "kermesse" as in Kermesse en Flandres = Carnival in Flanders, but I could find no relationship.

kermes is of course, related to verms (as in vermin) and the gives rise to vermillion (an other red.)--another name for a red made from insect shells/ectoskelatins.
(scarlet goes back to the same root, IIRC, there was a thread in Misc about 'seeing red' a while ago.)