Hi, Our pool will be 16'x 36' rectangular with a 7'x7' spa. I want a light blue/ turquoise water color. I actually like the color of plain white plaster but am considering NPT mini pebble in either Zanzibar or French gray or tropical because of the durability. Wondering if anybody has chosen these colors and may have a picture to share. I have looked at the NPT website but the pictures are very few for Zanzibar and French Gray. Does anyone know if these light colors will show algae more readily than others? Thanks in advance, Callie1015