Has anyone used fiber optics or cold cathode tubes on control panels? E.g., to show routes instead of just led's for turnout position? On my very small "strip" layout, I only control "routes," vice individual turnouts. It works well for me, but the only way to see which route is selected is to look at the turnouts. If somehow I could light the clear routes with green and the closed routes with red, I wouldn't have to squint so hard at the ends of the layout. Thanks,