Is There An Automagical Way To Change An Image's Color?

lxskllr

No Lifer
Nov 30, 2004
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I was looking at pics to use as a background for my phone, and found an old xubuntu wallpaper on my phone. Problem is, it's blue based, and I don't like blue. This is the pic in question...

1000046851.png

Is there a libre software solution where you can change one color and have the rest change in proportion; basically shift the spectrum using a couple button clicks, or moving a slider around?

I'm not an artist, and not inclined to spend a lot of time on it, but if it's easy, it would be occasionally useful. I don't care about the posted pic at all. It's just an example. I'll find something else.
 

lxskllr

No Lifer
Nov 30, 2004
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Cool. I'll have to play around with that. I don't do image manipulation much. Usually only trivial additions/subtractions. but I'm somewhat familiar with gimp, at least on an idiot's level.
 

Red Squirrel

No Lifer
May 24, 2003
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www.anyf.ca
I wonder if there's a way to do it in Gimp. I never really played with the scripting in that but I feel there would probably be a way.

I wrote a PNG library a while back, it's mostly just a wrapper to make libpng easier to use but that could probably do it too via pixel RGB value manipulation.