Sapphire Blue. One part of Chinese blue mixed with double the quantity of oxide of zinc. This should not be used for outside work.
Sea Blue. Two parts of Prussian blue, three parts of raw sienna, thirty parts white.
Sky Blue. One part of Prussian blue added to one hundred and twenty parts of white lead give a sky blue, but some prefer cobalt, and this is for many purposes doubtless the best. Still another method of obtaining sky blue is to tint white lead with a little lime blue, adding a very little middle chrome, but the latter is more suitable for a distemper color than it is for an oil paint, as lime blue is not very lasting in oil.
Steel Blue. Zinc white tinted with lime blue gives this color for distemper.
Stone Blue. One part of raw umber, twice the quantity of Prussian blue on a base of white lead will give this color.
Transparent Violet. Mix together four parts of ultramarine blue and one part of crimson lake. This is suitable only for artists' use.
Turquoise Blue. Two parts of cobalt blue, one part of emerald green, twelve parts of white lead.
Ultramarine. This is one of the chief blues used by painters, and must be bought ready made. It cannot be imitated, but it can be bought in many different qualities. It must not be mixed with chromes or white lead, as it contains sulphur.
BROWNS.
The painter will probably be surprised at finding the number of browns obtainable.
Acorn Brown. This is very similar to a rich chocolate, and may be made in the same way.
Alderney. This is an orange brown in hue, and may be made by mixing fourteen parts of black, one of white, two of orange and three of yellow.
