colour-man

   or colourman

   A seller of colours (colors) — pigments and paints. Or a colourer — one who adds color to a black and white print. Although a colorman might sell other supplies as well as paints, use of this title decreases as the sales of artists' colors are increasingly made by sellers of a variety of artists' materials. This term has been used almost entirely in Britain. The Oxford English Dictionary has noted uses of "colour-man" and "colourman" from the late seventeenth century through the nineteenth century.