Batch changing colors in png images?
Hi all, and a Happy New Year!
I hope this will be a simple problem for you. I've been doing some DVD authoring stuff, and I've got a large string of 3 and 4-color .png images (subtitles) whose colors are not what I want them to be. I need to find a quick way to switch the colors throughout the batch to different ones, without affecting the overall structure of the image (especially the 4 color limit and alpha transparency), and without having to open them all up individually.
In other words, if the images have color 'A' in them, I want a simple and safe way to change it to color 'B' throughout the whole batch. Is there some way to use GIMP or ImageMagick batch processing or something to do this?
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