yep, the small clear one by the hid bulb. the part number is 19171 (PIAA 168 plasma blue wedge bulb). they look very cool (at least i think so). cost $25 canadian (about $15 USD)for the pair. with the hid on it's hard to tell they are there, but at the right angle, you can catch a purplish glow which looks great.
Those lights are pointless, unless you have the lights turned to their first setting, but then the daytime running lights are on. So it looks bad. I found that out the hard way, but at least I bought cheap brand ones that cost me a whopping $2.50 Cdn!!