Yes, like someone needs Kemplen's permission or he may be doing something and he says no to that person. Well the Blue Pullman's Skins were Original Nanking Blue when first built. Then in 1967-1969, they got Full yellow ends. Then from then on to they were withdrawn (1973), they got the Gray/Blue window surrounds livery.
Actually, I know most of the stuff about The ill fated DMU's considering using information sites about the Class 251 and I'm only 12.