With Rod's permission, here are my pictures and some background of the repainted dome for my Lady Anne.
Most locos have a painted dome so I wanted to repaint mine in body colour. I also wanted a change of tank fillers which were also to be in the body colour. I contacted Roundhouse to ascertain the paint code/shade. (current models paint codes are now on their web site). When I explained my aim I was advised that as mine was an older model (2005 build) the paint used then was Rover Damask Red. Also as my dome was a polished one they suggested an unpolished dome was more suitable for painting. I purchased an unpolished dome from Roundhouse, and some tank fillers from Swift Sixteen.
I bought from my local Halfords the appropriate paint. I suppose any car paint supplier can supply the paint. Halfords is an acrylic formulation in a spray can. Red's can be translucent. I tried first on some scrap metal using black etch primer, but felt the colour not quite right, being a little too dark. A second attempt using grey primer was about right.
So the dome and tank fillers were sprayed accordingly. Two light coats of the final body colour. I will add a varnish in a day or two. The body is only placed on the loco for the pictures as there is a little more work to be completed.
I may also paint the boiler bands and handrails, but I haven't yet decided.

- Painting1.jpg (42.95 KiB) Viewed 26537 times
Lady Anne with a polished brass dome

- Brass.jpg (62.83 KiB) Viewed 26537 times
Lady Anne with a painted dome

- Painted.jpg (61.74 KiB) Viewed 26537 times
Ian