I have a Plaster pool that was installed last year. I chose a midnight blue plaster but on the day the crew came to install the plaster they had Hawaiian blue. Almost a baby blue. The pool installer assured me it would darken and look good. I have become accustomed to the color, but there are alot of whiteish streaks and stains that have been there since day 1. Installer told me that they would fade in over time. there are also quite a few areas that look 'thin'. Some areas have various colored dots starting to show up. I'm assuming they are the crystals in the plaster starting to show through but they are only in a few areas. I know nothing about plaster and wouls welcome any advice on what I am dealing with.