Light shade (4)
'light shade' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tint that I've seen before include "Hair dye" , "A slight shade of colour" , "work for coiffeuse?" , "(Softer variety of) colour" , "Hue, shade" .)
(Other definitions for red that I've seen before include "Very angry, seeing this" , "could be a Marxist" , "Glowing" , "Colour of 1 across" , "Carmine" .)