This section is from the book "Complete Self-Instructing Library Of Practical Photography", by J. B. Schriever. Also available from Amazon: Complete Self-Instructing Library Of Practical Photography.
Coloring Landscapes. After moistening the plate with clean water, color the sky first, holding the slide upside down. Begin near the horizon with extremely weak cobalt-blue, Italian sky-blue or crulcan-bluc and wash the color towards you over the entire sky and any trees that may extend over into the sky. Make the sky at the top of the slide much deeper blue and graduate it down to about the center. It is better to put on several applications with weak color than to apply a strong color and spoil the slide. If a sun-set effect is desired, use the sun-set tint very weak while the sky is moist. If clouds appear, color between them with blue, leaving the white clouds white. If it is a sun-set view, some clouds should be very faintly tinted on the edges, with the sun-set tint, yellow or gold. Dark clouds may be colored with silver-grey, red-brozvn or fawn. A plain white sky may be clouded by applying color in different places with cobalt-blue, very weak.
Trees. Trees which appear in the extreme distance should be colored with weak silver-grey, those next with weak grey-green; next with very weak olive-green. For distant fields use bronze-green in the high-lights and olive-green in the shadows. Alizarine-green is nice for distant fields, or weak olive-green may be used. Where several trees appear in the picture, they should each be colored with a different shade of green. Those nearest in the foreground, if of very dark color, with Hunter's-green in the high-lights, and red-brozvn in the shadows; others with olive-green in lights, and Hunter s-green in shadow. If the trees are light, color one with bronze-green in the high-lights, and Hunter's-green in the shadows; another with apple-green; another with Alizarine-green. This will give a beautiful variety of greens. Grass may be colored also with these different greens, the red-brozvn being void in some of the shadows.
Mountains And Rocks. Mountains in extreme distances may be colored with either very weak silver-grey, or weak purple, nearer ones with weak grey-green, and those still nearer with olive-green, shaded in places with red-brown and burnt-sienna. Always make the colors extremely weak in the far distance and stronger in the foreground. Use silver-grey strong in shadows of natural stone, and very weak in high-lights. Rocks may be colored with silver-grey, burnt-sienna, goldcn-brown, sepia, fawn or tan colors; or red-brown rock tint in the shadows, with bronze-gold in the highlights, which gives the prettiest effect where rocks are near green foliage. Use brick color for chimneys.
Water. Color very light water with weak cobalt-bhtc. For very dark water, use Hunter's-green in the shadows, and blue-green in the high-lights. The ocean may be colored with these, shading some-waves into olive-green, leaving the white-caps white. All colors mentioned can be obtained in extra tubes, if you should not care to mix them.