ETYMOLOGY
from Greek κῡµατ- (wave) + -ic + -al. after Latin cumatilis (sea-coloured, blue)
EXAMPLE
“… A Prince blew.
Crimson, i.e. Scarlet.
Cumatical colour, i.e. blew.
Flesh colour, a certain mixture of red white.
Gangran colour, i.e. divers colours together, as in a Mallards, or Pigeons neck. …”
From: The Compleat Gentleman: fashioning him absolute in the most necessary and commendable qualities, concerning mind, or body, that may be required in a person of honor.
By Henry Peacham, 1661
An Exposition of Colours
Lexicophilia 