I wanted clear turn signals on my GXP but was quite surprised to find that there was no clear bulb to fit in the socket. The GXP front turn signal bulb is different then on the NA and apparently it is only made in Amber. I did not let that deter me. I know I could order 3757 A Stealth bulbs but I did not want to spend $24 more nor have to wait for them to come in the mail.I bought a set of clear 3157A LL for about $6 and filed the tab down a bit so that it would fit in the socket.
Here is a link to a how to article I wrote.
http://www.cherod.com/solstice/HowTos/ClearTurn.htm