Acro ID?

[velvetelvis]

I traded a couple of frags for these locally grown acros at a LFS. They didn't know the species or even a trade name. Any guesses?

 

[Graffiti Spot]

Acropora austera or wwc called theirs yellow tip. Great grower with great colors if you give it space. The tips are nice but I love the purple/blueish polyps the most.