The most common and most likely answer to this crossword clue is the 7 letter word MOTTLED
I've seen this crossword clue in Independent
M
O
T
T
L
E
D
Buddy explains!

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 MOTTLED mean?
MOTTLED verb- To mark with blotches of different color, or shades of color, as if stained; to spot; to maculate.
- Colored in patches; spotted