First up thank you for looking at this thread. All right I went for the first time to Exotic fish and corals in Milford, CT and even though it wasn't a big store they had a large collection of corals. Bob the owner ending up selling me a hand size green star polyp for 24.00. The problem is that the mat has one side that is purple and one side is a very pale pink hue. Which side is actually the polyps? The other item I purchased was a half dollar size purple and green hammer coral for $20 and 2 different kinds of zoa's, one pink and one yellow for $22.00. Thank you