Finally grouted "The Four Florida Seasons" - a bear of a job due to the many different textures in the piece. Plus, the black grout is especially unforgiving if you get some where you don't want it, such as the whites of the eyes! or the pearls in the winter sky! I don't know what I'd do without my handy dental scraper. I'm considering a simple black frame made with strips of 1x2s painted black and nailed to the edges. I might even try to miter them if I feel energetic. Now on to the next project!