The two I have made so far are both in 'Blood and Custard' livery. I have a third that will be all over Maroon if I can find a prototype picture of one in that livery.
The kit comes with a flatbed trailer and can be made with the fifth wheel up of down. Also available was a step trailer, by K's I think which is also shown coupled to one of the Horses'.
The loads are solid resin castings, for 4mm scale I think (may be 2mm).
They should really have securing ropes to attach the load but time etc.
I think the third shot shows how good the castings are for the Society kit and with a little cleaning up a good replica can be made. Please search for the pictures showing them being made.