Looked approvingly, perhaps, at the general colour (6)
I believe the answer is:
leered
'looked approvingly' is the definition.
'leered' can be an answer for 'looked' (leering is a kind of looking). I am not sure about the 'approvingly' bit.
'at the general colour' is the wordplay.
'at' says to put letters next to each other.
'the general' becomes 'Lee' (Robert E. Lee - US revolutionary commander).
'colour' becomes 'red' (red is a kind of colour).
'lee' next to 'red' is 'LEERED'.
'perhaps' is the link.
Can you help me to learn more?
(Other definitions for leered that I've seen before include "gave a nasty look" , "Looked suggestively" , "Ogled" , "Looked or stared lasciviously" , "Looked and smiled lasciviously" .)