BLACK.
In transparent color this has more the effect of a dark gray than a brilliant black, such as is produced with body colors. When you want a very dark black, it is better to use a little India ink with it. It is used in the skies of landscapes when you wish a gray effect, or to subdue a too strong blue color or red, and in foregrounds for rocks. In connection with yellow it will make a sombre green for trees, mountains, etc. In portraits it is used for the hair and eyes, in the shadows around the mouth, and in drapery in connection with the other colors.
GOLD.
This is a combination of yellow and red, and in general can be used wherever either of these colors would answer. In landscapes a little can be used in the skies, the middle distances, and lights on the ground in the foreground. In portraits it is used to color the drapery and jewelry.
INSTRUCTIONS FOR USING LIQUID WATER COLORS.
Fill the two tumblers with water, and have all the other materials ready and convenient to work with. If you have selected a burnished and mounted photograph wet its surface with saliva; unburnished photographs, photogravures and engravings do not require this treatment, but in coloring them it will be necessary to mix a weak solution of gum arabic with the colors to prevent their penetrating the paper. If printed on too thin a paper the photogravure or engraving should be mounted. If it is found that the colors "crawl" or spread on the photograph, mix a little acetic acid with the colors you are using, and should this fail to remove the difficulty, rub a pinch of pumice stone over the photograph with the fingers.
If the photograph is a portrait commence with the background, washing it all over with a brushful of diluted color, being careful not to get any on the face. If the background is light, use a weak solution of blue, if dark, a brown solution. The majority of backgrounds only need a very little tinting—just sufficient to change the color. For the face use flesh color, diluting it to the proper shade, washing it entirely over the face, and with a stronger solution of the same color tint the cheeks and lips, giving them a little brighter effect than the flesh color. Touch up the shadows in the face with the brown, and if there are any reflected lights use a very weak solution of the yellow color for them; then with some very weak black make the shadows around the mouth a little darker; next with a solution of blue, also very weak, strengthen the shadows in the forehead and around the temples; then color the eyes, using a small brush. If they are blue, use a weak solution of blue, if gray, use a little black, and if brown, then that color. Next color the hair; if brown, use brown mixed with a little black to take away the reddish color; if auburn, use brown and yellow, with a little gray between the lights and shadows. In working on the hair, move your brush in the direction of the lines of the hair; if wavy, then cause your brush to follow its lines. After you have thus gone over it, darken the shadows with a stronger solution of the same color. After the hair, paint the eyebrows and beard, if there is any, with the same color.