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

[Ofnuts <ofnuts gmx com>]

On 02/02/17 19:39, trevard wrote:
> > 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.
>
> Attachments:
> * http://www.gimpusers.com/system/attachments/451/original/arrow.PNG
> * http://www.gimpusers.com/system/attachments/452/original/arrow_r_r_on.gif
A layer in the GImp image becomes a "frame" in the GIF animation.

So, there could be a fast an easy solution:

- Get the interleave-layers script  from here: 
http://gimp-tools.sourceforge.net/animationtools.shtml

- Add a layer to your image, fill it with required hue, then make it 
invisible

- Using Interleave-layers in "title" mode, interleave/merge it using the 
"Hue" blend mode


For more control:

- Instead of filling the whole layer, fill just the shape of the arrow, 
leave the rest transparent

- Using Interleave-layers in "title" mode, interleave/merge it using the 
"Color" blend mode


The script just uses the standard blend mode, so before calling the 
script you can make a test by changing the blend mode of the added 
layer, and adjusting the color for the required results.