Artists on color

"I fell in love with black; it contained all color. It wasn't a negation of color... Black is the most aristocratic color of all... You can be quiet, and it contains the whole thing."   
Louise Nevelson

“Indigo with terra sienna, Prussian blue with burnt sienna, really give much deeper tones than pure black itself. When I hear people say ‘there is no black in nature’, I sometimes think, ‘There is no real black in colors either’. However, you must beware of falling into the error of thinking that the colorists do not use black, for of course as soon as an element of blue, red, or yellow is mixed with black, it becomes a gray, namely, a dark, reddish, yellowish, or bluish gray.”
Vincent van Gogh 

"Seek the strongest color effect possible... the content is of no importance."
Henri Matisse