Quoted from michiganpinball:The colorization sounds great but I think there is another opportunity here. And that is this can be a low cost product for just replacing an outgassed dmd and also eliminate the high voltage section of the display board.
A plug and play rgb panel with all necessary components would be a good product IMO. Bonus would be if it could be driven off the 5v and 12v that is already on the connector to plasma dmds. The ability to add color is of course icing on the cake. If this could be around $150 or less then I think you could sell a lot as DMD replacements. This it they type of product that you could sell a lot of.
This is actually my goal. My TZ's DMD is original - 23 years old, and wasa going to be replaced with the restoraton I did. I have no interest in actually colorizing the animations, but am thinking of modifying the Pi's firmware to include a button input - on start up, it'll default to the DMD-orange, but can be cycled through other colors (Red, White, Green, Blue, etc..) with a press of the button.