Beg, i.e., for a change of colour (5)
I believe the answer is:
beige
'colour' is the definition.
(I know that beige is a type of light brown)
'beg i e for a change' is the wordplay.
'for a change' indicates anagramming the letters.
'beg'+'i'+'e'='begie'
'begie' with letters rearranged gives 'BEIGE'.
'of' acts as a link.
(Other definitions for beige that I've seen before include "Pale brown" , "Shade of brown" , "Fawn or buff" , "Pale sandy fawn colour" , "Taupe" .)