The problem is by no means just about appearance. We need a watertight joint between wall and floor. Baseboard made of tile sealed with silicone works. Acrylic does not. Not water-resistant, not flexible, and not adhesive enough. A pure silicone joint would also work. Better one made of MS polymer. More adhesive, more flexible, tighter, paintable. More expensive, harder to work with. What makes sense visually, decide for yourself by holding it up. Karsten