>Hmmm. Several layers... then only the colormap method would work. Now,
>"cold" and "warm" have no meaning in Gimp. What has a meaning is "this
>R,G,B triplet becomes this R,G,B one".
>If you post a frame of your GIF, we could better understand what you
>want to do.
Sure thing I obviously have near no experience with GIMP and I truly do
appreciate your efforts to help me. I'm not sure what exactly you mean by
"frame" but I included a screen shot and the GIF itself hope that helps.
>Sure thing I obviously have near no experience with GIMP and I truly
>do appreciate your efforts to help me. I'm not sure what exactly you
>mean by "frame" but I included a screen shot and the GIF itself hope
A frame is a layer, it even shows that in your screenshot.
The color-map is too complicated to easily edit so change the gif color mode to
RGB Image -> Mode -> RGB
The gif is optimized so un optimize it Filters -> Animation -> Unoptimize
One way (there will be others) is make a color mask of the arrow (incl border
pixels) in red.
That is then merged as an overlay with layer mode = color and reduced opacity
(75%) for each of the 21 layers in turn.
Very tedious but there are plugins to help. Ofnuts has one 'interleave-layers'