do all your reasearch first for HID..
if you want looks/color and Performance.. you have to change the projector ...
if you want looks/color you'll have to go in the 6000k and up range
if you want Performance stay under 5000k
read tony's post that should be a bit more detailed..https://www.celicahobby.com/ubbthreads/thread.f_252822_0_collapsed_5__1.html
also go for brand name hid's bulbs and ballast .. hella is one of the better known ones