12-13-2018, 06:31 PM
All sorts of ways and no one way will be universal for all images.
You could try: Colors -> Colorize and play with the sliders
If you find a suitable palette, one with limited colors, then Colors -> Map -> Palette Map might work https://i.imgur.com/pDXWWIh.jpg
Color pick a color, fill a layer over the image, try out various layer modes. This one LCH Chroma https://i.imgur.com/ZHBTT9J.jpg
The Gimp gmic plugin from http://www.gmic.eu has any number of ways for recolouring an image. Also has various color curves which might level-out brightness. https://i.imgur.com/PWTcBvK.jpg
All depends on the image, a portrait very different from your rendered plasma.
You could try: Colors -> Colorize and play with the sliders
If you find a suitable palette, one with limited colors, then Colors -> Map -> Palette Map might work https://i.imgur.com/pDXWWIh.jpg
Color pick a color, fill a layer over the image, try out various layer modes. This one LCH Chroma https://i.imgur.com/ZHBTT9J.jpg
The Gimp gmic plugin from http://www.gmic.eu has any number of ways for recolouring an image. Also has various color curves which might level-out brightness. https://i.imgur.com/PWTcBvK.jpg
All depends on the image, a portrait very different from your rendered plasma.