Snooker ball colour (6)
(Other definitions for blue that I've seen before include "Naughty < sportsman" , "Dismal" , "navy perhaps" , "Top sportsman who's up" , "Australian redhead" .)
(Other definitions for pink that I've seen before include "like the Financial Times?" , "Comedy films involving a diamond, Inspector Clouseau and Peter Sellers" , "Colour it's healthy to be in" , "(Shade of) flower" , "Knock (of engine) - garden flower" .)
(Other definitions for yellow that I've seen before include "Colour between orange and green in the spectrum" , "Cowardly - colour" , "This card is shown by soccer referee as a caution" , "Small European bunting" , "Primrose-coloured" .)
(Other definitions for brown that I've seen before include "Suntanned; sort of bear/study" , "Chocolate, perhaps" , "After half portion of bran, have" , "cook to a rich colour?" , "Colour (at No 11?)" .)
(Other definitions for green that I've seen before include "Area around a golf hole" , "Naive; colour" , "Proverbial constituent of our moon" , "The colour of inexperience" , "Envious; naive" .)
(Other definitions for black that I've seen before include "bar" , "(Of coffee) without milk" , "Sort of guard, panther, jack or pudding..." , "Like clubs and spades" , "Chess player" .)
(Other definitions for white that I've seen before include "Chess player moving first" , "Colourless" , "Wit, he? (anag.)" , "Colour of milk" , "murderer" .)