Mussini Burnt Umber, Translucent/opaque.
It is dense, permenant and opaque/translucent.
Although this color is very important because this is the hue yellow through red become at their darkest.
I have noticed not only does it have a high
absorbsion rate of oil, it also attracts mold.
A suitable replacement can be made with Burnt Sienna and Ultramarine Blue.