Ugh..I hate that.
The ColorDMD stuff has terrible blacks. I'm not even sure you can consider it 'black' the background looks so washed out
Quoted from Mocean:
The LP is supposed to be just as nice with respect to contrast. Supposedly the B has a slightly wider color gamut but I doubt you'd ever notice in this application.
I'm using DVI not HDMI, but it's a PC/P-ROC project, not Pi controlled. The T2 is VGA to garbage 15.4" monitor, making it look even worse. The biggest problem on that monitor is it's totally terrible black levels. Black looks like gray at best.