It's a nice colony, but I have no idea what it is.

[broke1]

 

[Kolognekoral]

Hard to be sure, but it strongly resembles A. chesterfieldensis. More branched than typical.

Very nice colouring. Are you in a low nutrient system? If so, expect it to pale out to almost white with bright rose tips. The brown comes from a high number of zooxanthellae.

 

[broke1]

It has turned to a white/cream color, the tips are bright purple, my camera skills need alot of work.