The artist might draft an outline of their subject prior to applying color to the surface. “Pigment” may be any number of normal substances with color, such as sulphur for golden or cobalt for navy. The pigment is mixed with oil, typically linseed oil but additional oils may be used as well. The various oils dried up differently creating mixed effects.
Traditionally, an artiste mixed his or her own paints for every project. Mixing and Handling the raw pigments and mediums was excessive to transport. This altered in the late 1800’s, when oil paint in tube became broadly available. Artists could mix colors rapidly and simply without having to crush their own pigments. Also, the portability of pipe paints allowable for plein air, or outdoor work of art.