A stunning choice is this Acropora hyacinthus. The coral tends to grow in a table top, which is why it's one of my favorites. The tips of this coral are bright blue and the coral is a tan color. These tend to requiire lots of flow to wash away detritus and floating algae. That being said, they don't have a good success rate for many hobbyists - calling it a challenging coral is 100% accurate.