Former Queen is done over in fine colour (6)
I believe the answer is:
sienna
'colour' is the definition.
(I've seen this before)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for sienna that I've seen before include "Yellow-brown pigment" , "reddish brown" , "Medieval Tuscan city" , "Brownish-yellow colour" , "rusty" .)