Go green, perhaps? (3)
(Other definitions for rot that I've seen before include "Balderdash" , "Drivel" , "Deteriorate" , "Putrefy" , "Gradual decline" .)
(Other definitions for dye that I've seen before include "Colour by dipping in liquid" , "Colouring material" , "Colouring liquid" , "Liquid used to change colour of clothes" , "Colourant" .)