The Mame graphic is fine I would just leave it be.
Just out of curiosity is that a black to blue fade or a dark dark blue to lighter blue fade? (my eyes are playing tricks on me)
If you want to have a go at a CP overlay sure give it a try.
I'm building a Lucid based cab so you can use those dimensions. Something generic might be better for you because I'm planning to have swappable CPs - that way you only have to do one
.
I am planning on a 2 1/2" inch strip at the top with control buttons permanently mounted (pause, coin1, start1, start2, coin2, Escape) -
The rest of the panel will flip out for switching.
FYI The panels will be:
1) 2 joysticks (red) w/6 buttons each (button 1 red, the rest black) with a red spinner in the middle.
2) Tron/Trackball panel (black spinner, red trackball, blue grip joystick)
3) Classic (centered red balltop joystick and lot of buttons for a variety of stuff).
If you have any questions let me know.
Thanks!