I did some etching via a service provider lately for my N scale rolling stock. There was some small space left, no large enough for N, but plenty for T

After having visited my Aunt in England, and passing by Sharingham Station where I had another chance to see some BR Mark I coaches in real life after 5 years, it was clear what should fill up this space.
Some weeks later the nickel silver sheets arrived. And here we are.


Its quite there where I wanted it to be. Now, I have to find a reasonable way of coloring that thing. Do you have any hints for me? I am thinking about testing decals. The maroon version can be maybe produced with an airbrush, then attaching the yellow lines in some clever way afterwards.
If there is interest, I can provide it as do-it-yourself set or even finished model.
Cheers
Kupzinger