Those new "blueish" headlights are called H.I.D. lights. They are illegal when used in the wrong housing. The Xciting has a reflective housing where the H.I.D. bulbs require refractive or projector based housing. You can get H.I.D. bulbs in a reflective housing IF the housing is built for the difference in bulb type. The projector based housing allows for a very even dispersion of light projected out from a dispersed pattern light spray. Another option you might have is something called Casper Shielded lights... however you would still require the ballast for arming the bulb with the high voltage/low wattage output. Third option, you could get a color treated bulb toned for 6K (Kelvin) on the color spectrum rated at high wattage.
I don't know how much room is behind the front faring/assembly, but it would take a depth of at least an extra 3" to retrofit a proper projector housing in the Xciting. A good buddy of mine owns the site HIDExtra.com. If you want to do HIDs ("ache-eye-deze") on the Xciting, post up your information as a step by step guide... I know people have paid several hundred for a well done retrofit.
Oh yeah, bulb information I found: 12V 60W/55W H4 Halogen bulb. There are 100W/90W bulbs available in the same mount options, but without upgrading the wiring and housing to handle the additional heat, it could potentially cause major problems to the electrical system.