I have been following this thread for a while. I now have a contribution to make! This MiniMax is my very first build. My sincere thanks go out to TomB for the excellent service and instructions on his website!
I went with blue LEDs in the tube sockets, and an orange on/off light. Then I disconnected the tube lights for a nice warm subtle orange glow that (imo) complements the tubes nicely.
In the first pic, the BJTs are on backwards. Rookie mistake.



