Quotation from: The Notebooks of Leonardo Da Vinci
Written by: Leonardo da Vinci
On the use of dark and light colours in painting (284--286).
284.
WHY BEAUTIFUL COLOURS MUST BE IN THE [HIGHEST] LIGHT.
Since we see that the quality of colour is known [only] by means of
light, it is to be supposed that where there is most light the true
character of a colour in light will be best seen; and where there is
most shadow the colour will be affected by the tone of that. Hence,
O Painter! remember to show the true quality of colours in bright
lights.