UsageClick in the image to add new color adjustments. You can add both colors that you want to change and colors you want to keep constant.
Click the color in the adjusted column in the color adjustment drawer to set it to set the target color you want. Pixels with color close to the original color will be adjusted to the target color. Letting the target color be the same as the original color for a color adjustment makes colors like the original color remain unchanged.
Tint is free to download and use and runs on Mac OS X.
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