The green and the purple do well enough, and the white.
But you want the red, you say.
Well, put back a tenth part of it.
And how now?
Add a still smaller bit of pale pink.
And how now?
Do you see what it all means? It means the rule we spoke of, and which we may as well, therefore, now announce:
"Harmony in colour depends not only upon the arranging of right colours together, but the arranging of the right quantities and the right degrees of them together."
To which may be added another, à propos of our bit of "pale pink."
The harshest contrasts, even discords, may often be brought into harmony by added notes.