I had the same problem. Then we chose Tropics Blue! OMG! It is the most beautiful color of blue ( pool color ) I have every seen in my life. I wanted to go with midnight blue. My PB said not a good idea because our pool is in the center of our home and he felt like we would be looking at a black hole 247. I begrudgingly said yes to Tropics Blue . Tahoe Blue had too much green ( our house is green and we are surrounded by tons of trees ) for me. Our original pool water color was a watered down windex YMCA blue color, yuck! They finished, we filled the pool and all I saw as GREEN our PB provided follow up care as far as water chemicals and general maintenance for 5 days after plastering and refill. By day 5 the color was astonishing! Imagine if you mixed 75% navy blue with 25% dark grey. Glass peble and shell automatically come in the TB plaster mix! The color is dark( not too dark) but a rich and luxurious Blue! Trust me choose Blue Tropics you won’t be disappointed! Good luck!Really need assistance with Stone scapes, pebble colors! So far we have it narrowed down to TropicsBlue, taho Blue and Midnight blue. With light waves surface tilesAny advice would be greatly appreciated. Thanks much!