Brick launches colorful cases for its phone lock device

The Brick is a trendy app-blocking device that makes it easier to stay off your phone; one Mashable writer used it to cut her screen time in half. It's a rather plain little gadget that's gray and blocky — pretty brick-like, some might say — but now, you can change that.Brick has just launched Brick Cases, some colorful snap-on shells for its eponymous device. They're priced at $39 each and sold exclusively in the U.S. through Brick's website, the company announced…