3. Install a set of PIAA Intense White halogen bulbs.
4. Install a good ($$$) conversion to HID lights, but know that you need wiring and relay work to handle 20 amps per light on startup.
(The OEM HID system starts at a 20 amp draw and -360/+800 volts as the arc strikes, and then settles down to 4 amps per bulb at 25,000 volts. A true install is not just a bluish-looking xenon bulb replacement.)