[Gimp-user] Changing color scheme across all layers in a gif

[rich2005 <forums gimpusers com>]

> 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.

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'
see:

http://sourceforge.net/projects/gimp-tools/files/scripts/

about 30 entries down

In practice looks like the attached screenshot

then the result has to be re-optimized and exported as an animated gif.

To be honest, not that easy for a beginner.

Attachments:
* http://www.gimpusers.com/system/attachments/453/original/overlay.jpg
* http://www.gimpusers.com/system/attachments/454/original/recoloured-opt.gif

-- 
rich2005 (via www.gimpusers.com/forums)