Fixed function prototypes to indicate new object is returned.
Improved parameter names.
Fixing comment - colorMatrixImage is applied to all channels.
Merge commit 'e003b34db60f0e682cc03ec66dbb3232da99fc0e'

* commit 'e003b34db60f0e682cc03ec66dbb3232da99fc0e':
  Fixing comment - colorMatrixImage is applied to all channels.
  Improved parameter names.
  Fixed function prototypes to indicate new object is returned.