Colour I like, no clothes! (6)
I believe the answer is:
indigo
'colour' is the definition.
(I know that indigo is a dye)
'i like no clothes' is the wordplay.
'like' becomes 'dig' (I've seen this in another clue).
'clothes' means one lot of letters goes inside another (some letters clothe or cover others).
'dig' put within 'no' is 'ndigo'.
'i'+'ndigo'='INDIGO'
(Other definitions for indigo that I've seen before include "Mood - (Duke Ellington)" , "One of the colours of the rainbow" , "Tropical plant" , "Blue dyestuff" , "supplier of blue stuff" .)