Welcome to the site and congrats on your F!
'm sure you can change it to blue. A lot of people are changing them to hyper white or another shade of white. Are you referring to the DRL's or parking lights? Below are two links that might be a helpful to you
http://www.clublexus.com/forums/is-f/398462-finally-got-everything-installed.html
http://www.clublexus.com/forums/is-f/392055-official-is-f-modification-thread.html?highlight=DRL
'm sure you can change it to blue. A lot of people are changing them to hyper white or another shade of white. Are you referring to the DRL's or parking lights? Below are two links that might be a helpful to you
http://www.clublexus.com/forums/is-f/398462-finally-got-everything-installed.html
http://www.clublexus.com/forums/is-f/392055-official-is-f-modification-thread.html?highlight=DRL