Not really car audio more of car modification 2006 caddy cts base model?

so i just recently purchased a 2006 cadillac cts the base model i am trying to mod it out such as audio,visiual, i want to change my front head lights and fog lights to xenon lights without the hid conversion does any know where i can find the bulbs. i want a blue color. i have an ebay account if anyone finds them on there thanks. Not really car audio more of car modification 2006 caddy cts base model?use sylvania website to find out what bulbs you need and then buy some Nokya artic white stage 1 bulbs they are inexpensive and super bright