math/py-colormath: Python interface to color math

Colormath is a simple Python module that spares the user from directly dealing
with color math.
Some features include:
* Support for a wide range of color spaces. A good chunk of the CIE spaces,
  RGB, HSL/HSV, CMY/CMYK, and many more.
* Conversions between the various color spaces. For example, XYZ to sRGB,
  Spectral to XYZ, CIE Lab to Adobe RGB.
* Calculation of color difference. All CIE Delta E functions, plus CMC.
* Chromatic adaptations (changing illuminants).
* RGB to hex and vice-versa.
* 16-bit RGB support.

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