WOW. Those are freekin cool! Guess I'd need to buy the resistor also. Almost $50 for bulbs. Ugh!!check these out. they are a white marker until the turn signal is started. then they flash amber. once the turn signal shuts off, they go back to white.
V-LEDS TYPE 2 DUAL COLOR CHANGING HID WHITE AMBER SWITCHBACK 48 M-SMT PARKING/TURN SIGNAL BULBS 7443 7443NA