Create Colors from imported image?

Clicking on individual colors will create a new palette color, is there a way to do this in one step?

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  • I'm not sure from your post exactly what you want to do, so my answer is a bit of a guess...

    This is one way to add colors to a palette from the document or from a selection (screenshot from 2018):

    It's also possible to create a new palette from a document: