Well, here's the first picture on the big 20BP4. This set came to life without much drama -- just a full recap and cleaning of tube sockets and controls, as well as the mechanical work on the tuner as mentioned above.
The CRT is reasonably bright. The set needs quite a bit of adjustment, and I'm going to have to find a big enough mirror to do it. The depth of this set makes it totally impossible to see the front while adjusting something on the back.
Regarding the color on the dial: The colors are on the back side of the dial, and there is some back lighting in the picture I took. Without back lighting, the dial doesn't show much color.