The most common and most likely answer to this crossword clue is the 7 letter word WHEATEN
I've seen this crossword clue in Financial Times
W
H
E
A
T
E
N
More clues leading to the result WHEATEN
Buddy explains!

The straight part
We know that "of a pale yellow colour" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case of a pale yellow colour = wheaten.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does WHEATEN mean?
WHEATEN noun- A pale yellow or beige colour, like that of wheat.
- Of, pertaining to, or made from wheat.
- Of a pale yellow-beige colour, like that of wheat.