How did you make those inserts for the buttons with letters?
I painted the white inserts that come with the buttons silver and had pongo cut out the vinyl letters for me.
Here's the info I sent Pongo if anyone wants to do the same exact thing.
But I did it first!

(even if I haven't gotten the cab built yet)
Need 4 each: A,B,C,D,X,Y,Z
Arial Black font
14mm tall
white vinyl
(I ordered double in case I screwed up)
You could draw xbox looking buttons, print them out on photo paper and put them under clear lenses.
I was originally going in that direction, but couldn't get them to look the way I wanted because I'm not that good with illustrator type programs.
I'm pretty happy with these although the silver came out of the rattle can a little darker than I expected.