Lipstick shades (4)
'lipstick shades' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for reds that I've seen before include "Left-wingers" , "Colourful communists" , "First snooker balls to be potted" , "Tidies up" , "Colours for communists" .)
(Another definition for pinks that I've seen is " Carnations".)