That orange pipe you saw is not the actual cable. That is called interduct. It is hollow and the fiber is run inside. I know of no fiber cable that is not black. 39 years Southern Bell, Bellsouth, AT&T. Retired.
One thing no one really touched on was the fact you don't have a hitch. 1) Get at least a Class 3. (2) Get the apprpiate ball mount to make sure that the trailer rides level. (3) if you are hauling a tractor you will need electric brakes so a controller is a must unless the trailer has surge...