Couleur (f.) = a substance to make metals flow more easily, a flux or liquifier. We need to search all instances of “couleur” to make sure we have distinguished “color” and this substance. Mark as a material in all versions of the ms, and leave in French (and mark with Fr tag)
njr2128 commented:
See also #185 for translation of "couleur/e" and related #110 for markup of "or couleur/e"