I guess I'd supply camouflage (8)
I believe the answer is:
disguise
'camouflage' is the definition.
(I know that camouflage can be written as disguise)
'i guess i'd supply' is the wordplay.
'supply' indicates an anagram (in a supple way).
'i'+'guess'+'id'='iguessid'
'iguessid' anagrammed gives 'DISGUISE'.
(Other definitions for disguise that I've seen before include "Make unrecognizable" , "Conceal identity, perhaps with make-up" , "Change of appearance for concealment" , "front" , "Clothes etc misleading as to identity" .)