Are you still liking your Reef liner?
I'm 99% sure I'll be going with the Reef myself in a few weeks. Should look great next to this natural stone coping:
We have dark gray mosaic full floor in our 16x36 sports pool. I took some pictures this morning. It still has some residual red clay here and there since we haven't put our landscaping in, yet, but this will give you an idea of what it looks like in morning sun.
Hope that helps!