They come shipped with the blue dot center installed but a whole array of colored center dots is included with the kit. We thought that the blue looked the best with our blue car so we installed the lamps with them in place. Everything was groovy until our friendly local California Highway Patrol Officer informed us that we could get a fix it ticket because blue was for law enforcement only. He said that blue lamps of any sort are illegal on a privetely owned or non-law enforcement vehicle.