@Ian Hargave
Yes but only elaborated that it was the choice of the 'technical department'. This was back when I was considering pre-ordering rood ashton hall (went with Bachmann instead), and as we can see they've followed through with that colour choice. As far as I'm aware Bachmanns green is correct, same with Dapol, Heljan and hopefully DJmodels, which also match what we see at heritage railways. I admit that's opening a can of worms but if Hornby have some new information that says all those are wrong and that's why they've changed it I'll tip my hat.