An artwork where the subject is in [[greyscale]] but the background is colored, it's usually also a [[simple background]].

Do not tag these as [[greyscale]], [[partially colored]] or [[spot color]].

However if there're parts of the image other than the background is colored, such as the subject's eyes, [[spot color]] can be used. If the subject has enough coloring on itself that you'd tag it [[partially colored]], simply use that tag instead and do not tag it as greyscale with colored background.