Solution
Adjust the levels of yellow, magenta, cyan, or black.
<Copy>
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<Color Balance>
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Tap the color
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Adjust the color level
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<Apply>
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<Apply>
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<–>
Makes the selected color lighter.
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<+>
Makes the selected color darker.
Example: If you want to make a copy with colors that more closely match the original
Example: If you want to make a copy with brighter colors than the original