Aliasing GEVO Lights to Another Engine

So in the Any Route Any Era thread, I saw Buzz post this picture of the WP F7 with the GEVO lights:

I'd like to do this on other locomotives, but I don't know how to. If someone could tell me how, I'd appreciate it.
I'd like to do this on other locomotives, but I don't know how to. If someone could tell me how, I'd appreciate it.
