put_color(+Pixel, +Color)
     put_color(+Colormapable, +Pixel, +Color)

Install Color as the color of Pixel in the colormap associated with Colormapable. Color is a color specification, as described above. For these procedures, colors may be specified as color(R,G,B) terms, where any of R, G, and/or B may be the atom none, in which case this component of the color is not set. Colormapable defaults to the default colormap of the default screen.