Combining a new level of programmatic support for symbolic color with carefully chosen aesthetic color parametrizations, the Wolfram Language allows a uniquely flexible and compelling approach to color and transparency in graphics and all other forms of display.
ColorsNear — represent a color region around a color
Blend — blend of colors
ColorNegate — the negative color to a given color
FindMatchingColor — find the shade of a color present in a list of colors or in an image
ColorData — hundreds of color schemes (gradients, named collections, etc.)
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Style — specify a color for any object
Opacity — opacity level (0 for transparent)
Specularity — shininess color for 3D graphics
Lighting — light sources used for 3D graphics
ColorFunction — general function for determining colors from coordinates and values
ColorRules — rules for determining colors for discrete data
ColorConvert — convert between color models
ColorQ — test whether an expression is a color directive