Answer:
Colorful is the adjective for the rings of the snakes. Colorful describes the look of the rings.
Step-by-step explanation:
ad·jec·tive
/ˈajəktiv/
noun
a word or phrase naming an attribute, added to or grammatically related to a noun to modify or describe it.
Exp. The day was cloudy
The elegant lady went downstairs.
A dog that was fuzzy liked to run in puddles.
Adjectives describe nouns.