Colour and leave the dance (5)
I believe the answer is:
tango
'the dance' is the definition.
(tango is a kind of dance)
'colour and leave' is the wordplay.
'colour' becomes 'tan' (tanning is a kind of colouring).
'and' means one lot of letters go next to another.
'leave' becomes 'go'.
'tan'+'go'='TANGO'
(Other definitions for tango that I've seen before include "Letter T in radio comms" , "Movement from Argentina" , "Dance; T (radio comms.)" , "Last - in Paris (film)" , "Activity requiring two to" .)