Like Robin, a forename for ... (3)

I believe the answer is:

red

I'm a little stuck... Click here to teach me more about this clue!

'like' is the definition.
Both the answer and definition are adjectives. Perhaps you can see a link between them that I don't see?

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for red that I've seen before include "See it and become angry" , "Ruby" , "Flushed" , "Looking embarrassed" , "could be a Marxist" .)

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