Yellow Colors.
Saffron.
The stigmata of Crocus sativus contain a bright yellow or orange yellow coloring matter which is easily extracted by alcohol, petroleum ether, or fat. We prefer petroleum ether in which the finely powdered saffron is macerated, the greater portion of the solvent being distilled off, and the rest of the solution is allowed to evaporate, when the pure coloring matter is left and can be easily mixed with fat. The coloring matter may also be obtained by macerating the saffron in melted lard or in olive oil.
Jonquille Pomade.
Genuine jonquille pomade, from Narcissus Jonquilla, has a handsome yellow color which is derived from the dark yellow flowers; for this reason small quantities of jonquille pomade are sometimes used for coloring pomades for the hair.
Curcuma or Turmeric.
Curcuma or turmeric root contains a very beautiful yellow coloring matter which is easily extracted by alcohol or petroleum ether. We prepare it in the same manner as stated under the head of saffron. Curcuma color cannot be used for articles containing free alkali, which changes it to brown.
Palm Oil.
has naturally a fine yellow color, which it imparts also to soaps prepared from it; but the color fades completely when the wet soap is exposed to the air.