I'm looking for suggestions for my waterline tile that will go with my bluestone coping and most likely prism blue pebblesheen plaster finish with moss rock waterfall. Not sure whether to blend in with coping or blend in with the waterfall. I am wondering whether to go with a blue stone 6 x 6 tile or a a natural tan stone look or a mix of blues and tans. Please share your suggestions and/or pictures. I am able to choose tile from united Pool and spa tile co.