The Color Model.
command inverts all the pixel
colors and brightness values in the current layer, as if the image were
converted into a negative. Dark areas become bright and bright areas
become dark. Hues are replaced by their complementary colors. For more
information about colors, see the Glossary entry about
This command only works on layers of RGB and Grayscale images. If the
current image is Indexed, the menu entry is insensitive and grayed out.
Activating the Command
Applying “Invert layer colors”