Invert the colors of an image layer

How to... > Sketch > Organize a sketch using image layers >

In Windows > Editors > Canvas Layer Editor, choose Edit > Inver layer.

This tool inverts the RGB colors in the image. For example, red (255,0,0) becomes cyan (0, 255, 255).

This tool does not affect Shape layers.

Note

When applied to a mask layer, or invisibility mask layer, it swaps the masked and unmasked regions, just like Edit > Invert Mask or Edit > Invert > Invisibility Mask.

See Invert a mask.