I had some trouble seeing well the sequencer in dark clubs or even at night at home with mild light. I am talking about the situation when you want to manually add high hats on the go etc. Here is an overlay for anyone who needs a more clear visual reference or just needs a nice touch for JD-Xi. Since the drum part is inspired with the TR-808 sequencer, the stripe is in the acid legacy colors:
INSTRUCTIONS: Download the file, print it 1:1 on A4 size, adhesive matt foil (any printing service in town should be able to do it) then cut it out. The dimensions are exactly matching the height and width of JD-Xi official overlay.