The TLR0600 front unit is the back half of the two-part TLR0600 tram. It is the half that has visible but not useable driving controls and a pantograph. Despite having the pantograph, it can move on its own without the front unit (or another motive power wagon/locomotive). It shows red lights in its night-time appearance
The back unit can have a livery applied with the Livery Tools mod; the liveries are included with the mod.
The back unit's wagon span is a bit shorter than the model. At the front of the unit, it can collide with other wagons such as another TLR0600 wagon, so you can't make nice looking tram-trains.