Raw umber, burnt umber and Vandyke brown
Burnt umber mixed with burnt sienna
Burnt sienna and raw sienna
Indian red, scarlet. Various shades can be obtained by mixing in orange and a bit of burnt sienna
Heavy raw umber stain
Thin raw umber stain. Also thin wash of lampblack
Rock & Stone Strata Colors
Stain with very, very thin wash of lampblack first. Then tint with extra thin washes of ultramarine and burnt sienna.
Indian red with burnt sienna. Sometimes burnt sienna alone will do the job.
Vandyke brown wash with small amount of orange added.
Light chrome yellow with Vandyke brown.
Thin wash of lampblack first, followed with a tint of pale ultramarine blue.
Claret red/maroon applied very strong
Burnt sienna blended with Vandyke brown.
Dark gray stain made with Payne's gray streaked with heavy blue-black