Designer and artist Cynthia Meyer began painting in 2000, the year—to quote Virginia Woolf’s essay on woman writers—she got “A Room of One’s Own.” She turned down a 900-square-foot studio as too grand (with not enough light). Her modest home studio with exposed rafters has the feel of an improvised space inside a house artfully designed to suggest improvisations (including a thirty-five-foot prominence built to look like a repurposed water tower). “It’s all about the color. Color makes me stop.…