Crossword Genius

Pie crust’s colour? (4)

Ross

I believe the answer is:

ecru

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

'colour?' is the definition.
(ecru is a kind of colour)

'pie crust's' is the wordplay.
'ECRU' is hidden within the letters.
However, I'm uncertain how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for ecru that I've seen before include "No bright colour" , "Unbleached-linen colour" , "Bleached linen colour" , "Find a cure, strangely, in the colour" , "Raw linen colour" .)

I've seen this clue in The Hindu.
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