I think the problem is the weird way RT3 does perspective from some angles.
Not only the RRT3, but is is my eyes too.
I now know that most Schools had same tender, but when I google pictures the angle make it look like there were several different lenghts. So it so no "problem", but more perhaps an optical illusion.
I think your tender looks good. I know that you will "fix" the stepping ladder in skin, so the current 3D box (plane) makes it look longer than it really is.
*If you ever want to fix the drivetrains or other details on your old locos, I'm happy to help out with that.
Thank you for your offer, but I think it is no. I feel that your route to make new ones is better. My locomotive are bastard mutations of RRT3 ones, so I feel that it is not worth of time to work on those.
If I have time this weekend, I might try to something myself. I have not forgot Black 5, but this discussion did remain another Southern favourite of mine. A1 Terrier. As 0-6-0 tank with inside cylinder, it is about as simple as a locomotive can ever get.
There has probably been some distortion of colours, unless the sky really was that colour in mid-1930's London (which is scary, but possible). I'd also expect a more intense red on the buffer beam. Still, it gives the general idea, and it's noteworthy that this is apparently the "new light green". At a guess I'd say this is probably what people refer to as "Ashford olive", with the "old dark green" being the "Eastleigh olive".
The company logo and numbering is Bulleid Sunshine, so it would indicate that this really is a Malachite Green. So I would say that the colours are distorted. It says that it is supposed to be a colour photograph, but to my eye it is more of re-coloured photograph. They did that in 20's - 30's UK magazines.
London is known as "Big Smoke", but as you said, that colour sky is bit scary.
I would not worry too much about the exact shade. Just pick a darkish green colour which pleases your eye. I have done enough modelling to know that the beauty lies on beholders eyes.
I have witness enough argument on what is the "correct" shade that I know that there is no one right shade / colour.
Your olive green is perhaps bit darker than I am used to see on model trains. But models do get lighter colour for scale effect. And when I googled yesterday, I found 3D models dark as yours. May be darker. So I think that yours is a good colour.
I own only one Southern Olive Green train model. A Terrier. But I will dig it up tomorrow and see how it compares to your shade. I personally think that this kind of accuracy is more than enough for this game. Only reason why I talk so much about the details is how fond I am on Southern and Schools. I really like how Southern yellow fit to green base, so that why I would like to see lettering you are using in a richer shade.
These just crack me up. I can't look at them without laughng, but they did work for secondary express in the early 20th century. It wouldn't be hard to make one, and you could find a slot for them for light UK express in RT3, but other things have to be done first.
Yeah, high boiler and short length make it looks like someone would squashed it.
It would be a fine addition to the game. I would like it. I have always eyed for LNWR Precedent as for late 19th Century UK express loco.