To make a yealow colour on skinnes.

Take the ripe seeds of perprun, so called in french, dry them in the sunne, and when ye will worke therewith, temper it with lye, and with a little Allom of the Rocke, and let it rest till it be molten, the which will make it to take a yealow colour, but the lye must first bee heate a little.

Citation Type  Leather Dye Recipe
Citation Year 1602