To my knowledge, there were up to four different liveries : black or green, with or without red net.
Besides, two series were built with, between each of them, some differences of technical order merely visible. We can retain however the shape of the buffers and the number of hinges on the door of the smoke box which passed from two to three. These small differences had not been reproduced.
The model in black livery without net :
The model in green livery with red nets :