1. A processing apparatus for enhancing image color, comprising: a color space regional parameter storage module to store adjustment parameters each of at least two color space regions; a plurality of color space regional decision and enhancement attenuation calculation modules to calculate a color enhancement amplitude of a pixel responsive to the parameters for a region, wherein each color space regional decision modules corresponds to a color space region; a color space component enhancement module to calculate a component of the color enhancement amplitude of the pixel in its color space based upon the color enhancement amplitude of the pixel in each region.