Crossword Genius

This is coloured, but not evenly (4)

Ross

I believe the answer is:

clue

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

'this' is the definition.
(the clue referring to itself!)

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for clue that I've seen before include "Crossword hint?" , "Slight indication (as here)" , "Crossword aid" , "Aid to puzzlers" , "What's this" .)

I've seen this clue in The Guardian.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.