With drug-store hair dye kits — especially those on sale — you get what you pay for By Kelly Hockenberry, Columnist, The Times This is what happens when you try to act like a professional hair colorist/stylist and you aren’t one.  You end up in a chair with foil on your head and a cloak of shame. I have written about this very topic before and in my typical “know-it-all-ness”, I sound...