It may not be top professional quality or anything like that, but I happened to of done just what you asked with the cabinet.
This literally just took me a couple mins once I figured out what panel to open in Gimp, and it is my very first time that I have ever tried to change the color of an object like this, so I did it hastily and it is not perfect, but it was good enough for what I needed to do with it.
I also changed the layout of the colors on the control panel to match my personal MAME cab.
Might as well share it, but I am not taking requests for more colors or anything. Again, this took me less than 5mins and was my first attempt at such as task, and all using a free program.
Here you go: