1. A controller for automatically adapting illumination light in a vision system to a color of a part feature against a part feature background of a part being viewed by said vision system, said vision system comprising a camera viewing said part feature against said part feature background and an illumination light generator responsive to at least one illumination light control signal to generate illumination light of one color and/or intensity from among a plurality of available colors and/or intensities, said controller comprising: a controller input responsive to at least one illumination light adjustment signal which adjusts said at least one illumination light control signals based on said light adjustment signals to cause said illumination light generator to generate an illumination light corresponding one of said plurality of different illumination light colors and/or intensities.