After a dozen or so years in her St. Louis home, Dawn Weinhardt, co-owner of Weinhardt Party Rentals, was ready to freshen up around the house, starting with an outdated master bath. A head-to-toe makeover in the summer of 2017 took the room from dim and dull to bright black and white. It’s now a modern gray-tone bathroom with a mix of just enough femme frill and mild machismo to make the space a haven for just about anyone seeking a quiet retreat.