I have taken off some of those images, basically all the same. If you want to post the whole gif use dropbox or similar.
I got your original image as a jpeg. A gif is somewhat different, a jpeg can have thousands of colours, a gif maximum 256 and uses a colormap where each pixel is assigned one of the 256.
It all depends how many layers you have in your animated gif. Even if several tens of layers it will be faster for a beginner to treat each layer rather than try and batch convert the animation.
Open the animation.
Use Image -> Mode -> RGB to get out of Indexed Mode
Click on the top of the layer stack and adjust the colours.
Keyboard down arrow drops to thenext layer
Ctrl-F is the shortcut to repeat the filter.
...repeat that ⭣ down arrow then ctrl-f ... for all layers
When complete save as a Gimp .xcf in case more editing is required. For an animation export as a gif and it will convert back to indexed mode
I got your original image as a jpeg. A gif is somewhat different, a jpeg can have thousands of colours, a gif maximum 256 and uses a colormap where each pixel is assigned one of the 256.
It all depends how many layers you have in your animated gif. Even if several tens of layers it will be faster for a beginner to treat each layer rather than try and batch convert the animation.
Open the animation.
Use Image -> Mode -> RGB to get out of Indexed Mode
Click on the top of the layer stack and adjust the colours.
Keyboard down arrow drops to thenext layer
Ctrl-F is the shortcut to repeat the filter.
...repeat that ⭣ down arrow then ctrl-f ... for all layers
When complete save as a Gimp .xcf in case more editing is required. For an animation export as a gif and it will convert back to indexed mode