And I recall it had a green outline so no its not orange but I modified it only a few weeks ago.
I sincerely doubt that your recollection here is accurate. The only green items I've seen at low level that are moddable are companion weapons and droid components.
If you like the idea of modding gear, it's probably a good idea to look for the lightsabre that you were given at the time you chose your AC. That's orange and fully moddable. Effectively you don't need another weapon at least til endgame. Just keep that one up to date with Commendation-bought modules. Hopefully you didn't vendor that sabre.