Quoted from briyau15:AUKraut Jarbyjibbo
ColorDMD support says it’s a communication error from the board to the CPU
I colored several titles for ColorDMD, the board doesn’t know anything about what’s happening in the game - it ‘converts’ whatever image it’s given to color. If the display works in attract mode, then the display is ok.
When you say it doesn’t work when you make some shots.
Does it switch from color to monochrome during the game? If so, it might not have the right ROM installed. I did that on accident once when I download the wrong machine ROM for a new display. If the card doesn’t recognize the image, it displays in the default color.