Love Interests have always been Colour-Coded for Your Convenience. Traditionally, the hero's significant other would usually be a blonde, to contrast with the brunette Vamp or Femme Fatale. But today, the passive Distressed Damsel and Shallow Love Interest have been replaced by the sassy, bold, brash, sharp-tongued Action Girl and Well, Excuse Me, Princess! -- easily compatible with the "spunky Fiery Redhead" stereotype. Naturally, it's quite common for the Veronica in a Betty and Veronica Love Triangle to be a redhead; the Betty will be a blonde. Compare Everyone Loves Blondes, Redheaded Hero