Yea the stock lights suck.
These were on ebay too. I havent personally tried them but my friend did. He bought the whites not the blues though for his Celica same brand and everything. They did brighten up the road a lot more. If you check on there every once and a while they will pop up for our car. Or i'm sure you could email the dealer and see if they have the whites for the nx.
http://cgi.ebay.com/ebaymotors/ws/eB...category=42606