IGR has coloured debug screens as well. Since the colour is drawn as the background, it sometimes appears as a border around the (last) image drawn by the game.
Anyway with the build you linked IGR perfectly works with all games I tried from SMB!!
Every game but Ultimate Pro Pinball … I can IGR-PowerOff from this game. But performing the normal IGR It ends in a BSOD (I can see the colors on the border: Yellow, blu, green, then BSOD).
IGR works fine with this game.