General: invalid color
Images or animations featuring this tag were previously given tags related to colors that are no longer actively used on the site (such as green and magenta).
Simple color tags, like orange, or red should not be used and instead be replaced by more specific tags, such as the background, eye, hair colors, among others.
For a somewhat comprehensive list of color tags, see tag group:colors.
If you stumble upon some of these color tags: purple | pink | yellow | brown | black | white please replace them with something more suitable like blue_hair or yellow_nose.