I went to the new Coffee Tree Café today. It is across the river from downtown Bay City, what is that? Uptown? It has the atmosphere down. Tables of dark mahogany or oak, funky black chairs set off a light airy texture. It has the culture of a hep cat. The Metallic Green espresso machine pulls together a vintage theme—the pigment on the canvas of high ceilings, Art Nouveau metal work and…