Hello! Yes, the interior is black pebble finish. We learned from the builder that applying this finish takes a high level of skill to avoid streaking, so make sure you have found a good company, who can show you a black pool interior they have done themselves. We can connect you with a builder in phoenix we recently worked with who did a black interior that turned out beautifully. And we, too, are located in Phoenix, so we can definitely help you with tiling your pool. Call me when you are ready to discuss, and I'm also happy to help you be sure you're working with a builder who will be able to deliver a project of this caliber this without issue. Amy 602-541-3065 amy@alpentile.com

thanks a lot. I will contact Amy shortly.