Colour metal, for example, reflected (5)
I believe the answer is:
tinge
'colour' is the definition.
(tinge is a kind of colour)
'metal for example reflected' is the wordplay.
'metal' becomes 'tin' (tin is a kind of metal**).
'for example' becomes 'eg' ('e.g.' can be a synonym of 'for example').
'reflected' is a reversal indicator.
'eg' back-to-front is 'ge'.
'tin'+'ge'='TINGE'
(Other definitions for tinge that I've seen before include "Small quantity of (differing) colour" , "A smack" , "show a bit of colour ?" , "Colour slightly; trace" , "Slight amount of colour" .)