211).

Or, the addition of a little ammonia to the stain just before applying aids it in penetrating the wood.
The pigments most used for oil stains are: burnt and raw umber, burnt and raw sienna, Vandyke brown, drop black, and medium chrome yellow.
These colors may be varied by mixing.

For example, for a green stain, take two parts of drop black and one part of medium chrome yellow, and dissolve in turpentine or benzine.

The addition of a little vermilion gives a grayer green.

The green may be made bluer by the addition of Prussian blue, but the blue already contained in the black gives a soft, pleasant green.
For antique oak, add a trifle of burnt umber and black to raw sienna thinned to the right consistency.
For a reddish brown, thin burnt umber to the right consistency.