Nice. Very nice.
And, as a bonus, it looks like we'll have decent weather for a couple more days at least, so you'll get to enjoy it right away! (Altho' it took about a day and a half, with 3 hoses, to fill ours. Yours will probably take longer). If you're like us, you'll enjoy all but the brushing. But it's really nice to be able to be outside - in August - in/around Houston! Who'da'thunkit?
I like your color / tile / coping choices. You're really going to enjoy your Pearl Matrix. We went with WetEdge Satin Matrix and I had the same concerns that it sounds like you did ... I stood by the truck as they were mixing, even had to ask them as they had (WetEdge) mix that had different names than what I ordered. Best I can tell, they have a formula to mix 'em together. Sure enough, I put our "sample" next to our pool and it's exactly what we ordered.
Have fun, Mark.