These tiles are amazing! We use them in our all black restroom within our co-working space. It's s small enough restroom (5' x 8') where the investment wasn't too overwhelming. Plus, they definitely have that wow factor. Anyone that walks into our restroom is always pretty impressed by these. 

Surprisingly, they do not look as dirty or pick up as much dust dirt as one would expect. We have a pretty high traffic restroom and, if anything, look more clean than dirty.