You can colour correct clips loaded into the Modular Keyer, Action or Paint.
Back clips and key-in clips cannot be colour corrected.
To access the Colour Corrector from the Modular Keyer:
You are in the Colour Correct editor.
To access the Colour Corrector from Action:
The clip is loaded into the Colour Corrector.
To access the Colour Corrector from Paint:
The clip is loaded into the Colour Corrector.
The cutout is loaded into the Colour Corrector.