Afraid playing snooker, scoring just two (6)
I believe the answer is:
yellow
'afraid' is the definition.
(thesaurus)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for yellow that I've seen before include "like a canary" , "Flaxen" , "Colour of cowardice, custard" , "Custard-coloured" , "Offensively sensational" .)