WThieves Mods

So I was looking inside the mod and I noticed there were unused texture for the traffic lights and railroad crossing lights being on. The question is, have they been there for a long time and were never implemented or is that a planned feature?

Also I was wondering if, in case this isn't a planned feature, you could simply make identical blocks that use those textures, so that people who are good with command blocks can make fully working crossings and traffic lights.