Lacking wisdom of my own, I'll share some more from Robert Henri (1865-1929):
"In my understanding of color, there is absolutely no such thing as color for color's sake. Colors are beautiful when they are significant. Lines are beautiful when they are significant. It is what they signify that is beautiful to us, really. The color is the means of expression. The reason that a certain color in life, like the red in a young girl's cheek, is beautiful, is that it manifests youth, health; in another sense, that it manifests her sensibility."
Painting by Daniel Gerhartz