It's not easy being green - so Twin Cities Green is becoming Moss Envy. The new store will open June 19 at 3056 Excelsior Blvd. near Lake Calhoun in Minneapolis, next to Whole Foods. It will still be green, but a little less GREEN as owners Ryan and Tina North try to move from niche to mainstream lifestyle store selling a broader range of goods, from furniture to clothing - all of which happens to be eco-concious. (Read more about the evolution of Twin Cities Green and the green movement in my Savvy Shopper column.) May 28 will be Twin Cities Green's final day at 2405 Hennepin Ave. S. in Uptown. A moving sale is on now.