I have painted (badly) my own livery on stock. The history of liveries for the northern england based company was as follows
The Original Livery was predominately red and white with a black stripe, which had a white cab end and roof. However it was quickly modified with black replacing the white around the front and on the roof.
Another livery was devised for express routes and was applied to 156s and 158s where the white was dropped and the black stripe now being a window surround.
A couple of special locos were built but rarely used, a 92/1 and 59/3 were fitted with ETS and regeared but with mixed results.
Later repaints saw the red and white/black schemes replaced by a turquoise and purple effort applied to units and also a few 47s and a surviving 50.
I have done a couple of repaints based on what might have been, but that's another subject.