greyscale with colored background
A common composition where a greyscale subject is on a colored background, usually also a simple background.
Do not tag these as greyscale, partially colored or spot color.
If small parts of the subject, not part of the background, are colored, such as the subject's eyes, spot color can be used. If the subject has enough coloring that you'd tag it partially colored, use partially colored instead and do not use this tag.
Examples
