Selective saturation
  • Is there any way to saturate/desaturate a specific color without a duplicate layer/masking?
    For example: desaturate the reds in a portrait while maintaining a vivid blue in the background. The GIMP had 8 color channels to select in its hue/saturation dialog.
  • There isn't a way to do this at this time -- but we'll take this as a feature request.

  • Cool, although the more I think about it, the more I feel like more controls in each filter box is not in the simple spirit of Acorn. I have an idea in mind about how I can isolate specific color channels using layer blending and avoid feature creep.
  • You might try BC Channel Mixer:

    Or some of the other filters that come in that package.  I bet one of them will do the trick for you.

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