Thanks for putting this together.
I noticed you can configure brightness on the same RGB_DMD tab on line 68. It's ridiculous... it's a near passable brightness at 1%! I've set mine to 5% for now.
matrix.setBrightness(5);
I verified plug and play compatibility with Starship Troopers and Jurassic Park. There are some sync issues with Super Mario Bros that I've reported to Eli and hope to help resolve, maybe with some recordings and feedback.
BTW, as far as troubleshooting goes, I had a heck of a time trying to get the Teensy recognized on my PC (tried 3 separate PCs and a few different USB cables). Apparently mine wasn't getting power through USB, but worked fine and was recognized by the PC when I plugged in the external power.
My phone can't capture a decent image on these for crap, so I'm not even going to bother, in fear that it would make this product look bad.