Colours for glasses? (6)
I believe the answer is:
shades
I believe this is a double definition.
'colours' is the first definition.
(shade is a kind of colour)
'glasses?' is the second definition.
(shades is a kind of glasses)
'for' is the link.
(Other definitions for shades that I've seen before include "Slangy sunglasses for literary ghosts" , "Sunglasses (informal)" , "blinds?" , "Sunglasses, colloquially" , "glasses?" .)