Colorizing materials

Most materials can be colorized dynamically.

The colorization algorithm is quite simplistic and works best for material images which have a limited hue range. To colorize a material, the renderer simply subtracts the bgc= value and adds the color= value to each pixel value.

Colorization is disabled if color= is not specified. bgc= is ignored by cabinet materials; the base color value embedded in the vnc file is used instead.