Dependant on version... NCB Blue (Very near to C&O Enchantment Blue.)with red pinstriping, handrails, cast plates apart from builders and coupling rods. This was used in the North East area from the early seventies (possibly the late sixties?)
Earlier livery was Green. You can just make out some green in the phot where somebody had nicked the builders plate. The builders plates had been promised to me! I had to make do with the locos gauges instead...
Porcy
1981-03-08 Hunslet 0.6.0 NCB North East Area 2404-35, East Hetton Colliery by delticalco, on Flickr