If I can find it, I maybe could recolor the JNR 940 for you.
Its base of the JRE KiHa 40:


If there is a configurations of doors and windows you like better. The coloring is not the hard part.
Setting up the texture work file, with shadow and highlights, door, windows etc. which takes time.
The EMU for the South Shore, will have to wait. It needs to remodding.
You could try your luck with some modding, using the models and textures from Volume 11 and insert it into an engine mod.
That is how these are more less done. A few things have been learn and things have been added over time.