NPT StoneScapes® Puerto Rico Blend Small .5 MIDNIGHT BLUE MINI .5 KIT Midnight Blue Pebble Pool Finish .5 Parent Kit. StoneScapes Puerto Rico Blend Small Midnight Blue aggregate finish for pools creates dark blue to dark blue/green water color depending on the depth of the pool and the pool surrounds and is comprised of modified white Portland cement which has been colored with midnight blue pigment, black, gold and white quartz pebble aggregates and a specialty blend of colored quartz highlights and a specialty blend of small glass bead aggregates. The Puerto Rico Glass Bead Blend enhances the water color in every pool finish by bringing other dimensions of color and reflectivity that only colored glass bead can do. The beauty of this finish comes from the shade and color variations inherent in natural materials.