In addition to the SAM/WS cable kit, you'll also need the clear shield and standoffs to mount to the metal speaker panel.
Depending on how old the ColorDMD is, it might also need an updated mounting bracket. We changed the bracket after IM vault to accommodate the sloped metal speaker panel. You can tell if it's a newer bracket by looking at the sides of the bracket... The new brackets have mounting holes near the bottom edge of the display and the small screws are located at the top and center of the LCD screen (rather than top and bottom).
All parts needed are available on the ACCESSORIES page of our store site.