Looks pretty lovey but I read on the topic that it messes with your Blockhead's lighting?
Edit: just tested and I have a few problems
1. These completely darken the colors of the bricks and make the game look a lot.. darker. Legos (and Blockos) are happy, colorful things and darkening this much makes them kind of ugly.
2. There are little white lines that show up on the side of the Bricktop texture and they are significantly more annoying than bricks showing up in dark maps.