Draw colour in layers (6)
I believe the answer is:
tiered
'in layers' is the definition.
(I've seen this before)
'draw colour' is the wordplay.
'draw' becomes 'tie' ('tie' can be a synonym of 'draw').
'colour' becomes 'red' (red is a kind of colour).
'tie'+'red'='TIERED'
(Other definitions for tiered that I've seen before include "Arranged in layers like big cake" , "Set out in layers like wedding cake" , "Like some wedding cakes" , "in racks, say" , "Laid out in layers, like wedding cake" .)