@PandoraBox, I normally start flushing when they are around 75% milky and the days of flushing finish them nicely. I never wait till they are amber because then the final smoke gets to "couch-lock" like :)
@Pot_Portraits, thanks for the help men, they are starting to look white, but not of the trichomes are browning yet, the two autos are in week 8 of flower