Whatever party of Colourists may find favour in the eyes of the reader, it will be necessary for him to be aware of certain effects observed in Nature, of which he will make such use as is admissible under the principle he may adopt.
Colours reside in the light parts of objects, if not brightest on the lightest parts, closely adjacent to them.
Shadows reduce, blacken, or render negative the colours of objects. The edges, extremities, or boundaries of all shadows are grey.
From the effect of contrast, shadows appear comparatively of the opposite colour to that of the light. The Bianchi take advantage of this circumstance, and sometimes force or increase the colour of the shadow, to bring out that of the light without really tinging it so deeply as is the case in Nature; whereby greater brilliancy is retained.
The colours of the lights and shadows depend upon that of the illuminating power, whether sunshine, moonlight, or grey daylight. These will be separately pointed out.
SUNSHINE
CHAPTER III.
SECTION III.