GIMP Plugin Registry

This script works just like the HSL adjustment Tool, but on indexed images.  read more »

I wrote this script using GIMP bug #88361 as inspiration.
This script provides three functions that expand GIMP's ability to deal with indexed colors. I designed them with pixel artists in mind, who frequently store their target palette as a set of swatches in one region of the image they're working on.

(Image) > Colors > Map > Colormap to palette
Creates a GIMP palette based on an indexed image's colormap, which can then be used just like any normal GIMP palette.  read more »

This plug-in changes colors in an image based on the HSV difference between two colors. This is particularly useful for applying color themes to existing images.
It avoids burning out high saturation and value at the expense of compression them somewhat when the difference goes towards higher saturation and value.
Current bugs/missing features include:
Undo does not work.
It can't be used on indexed images, even though it would frequently have enough colors.  read more »

Change the color saturation of your image (implementation of a 'digital velvia')