Color practice
Color editing with intent: invert, replace, and compare
Color-editing tools are most useful when the transformation has a job: reveal a relationship, test a variation, or make a contrast easier to judge.
Make the operation answer a question
Inverting a color can expose a hidden relationship; replacing a color can test a new direction; separating channels can show where an image gets its energy. The operation matters less than the question it helps you see.
Before editing, keep an untouched source and define the part of the image that must remain stable. A global transformation can be useful for exploration, but it should not quietly change the meaning of the whole composition.
Compare before you commit
Save the original beside the variation and compare them at the size where the work will actually be used. Check edges, skin or material tones, text overlays, and the balance between the dominant and supporting colors.
When a transformation works, carry the principle into the palette rather than exporting a one-off effect. That makes the result easier to reproduce across an interface, image set, or campaign.