Ref that is not allowed out in different colours (10)
I believe the answer is:
variegated
'ref that is not allowed' is the definition.
The definition and answer are not the same part of speech.
'in different colours' is the wordplay.
'in' means one lot of letters goes inside another.
'different' becomes 'varied' (associated in meaning).
'colours' becomes 'gate' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'varied' going around 'gate' is 'VARIEGATED'.
'out' acts as a link.
Can you help me to learn more?
(Other definitions for variegated that I've seen before include "Showing mixed colours" , "With coloured patches" .)