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I'm running an experiment that presents stimuli that I've created externally in Illustrator. The stimuli are novel squiggly shapes. The main task is a color memory task, so I need the color of the shape to be able to changechange. I know that you can change the color of circles, squares, etc, but can you do this with jpg/pngs, etc? The image is just white and black, and I'd like to be able to select all the white (255 255 255) values and change them to some specified color. I see there is a "transparent color" attribute for pictures where you can select a certain color and make it transparent, but can you do a similar thing to select a color and change it?
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