I'm trying something new here, a mosaic, and this is the prototype for future projects. The only thing is, I don't know what color grout to use. In case the photo is not reflecting the correct colors, the primary flowers are in the orange, blue and pink tones and everything in the background is white, and a light pale beige and a baby baby almost white baby blue. The squares are the baby blue, the brick like background is the white and the triangles are the creamy beige. So do I use a black grout? I would like the flowers to pop a bit more and some of the leaves don't stand out enough for me right now so I'm thinking a darker color. I'm not thinking I want blue grout so do I go grey or black???