Can't remember what this one is:
Looks like a Montipora hirsuta.
The ID is off the growth shape rather than the colors. Colors is a horrible way to ID any sps. M. hirsuta comes in different polyp colors as well, such as cream, brown, green, and brown that I've seen. It could also be M. stellata as well. Break a tip off, bleach it and take a closer look at it under a microscope if you want to have an actual crack at the ID.
M. hirsuta
http://coral.aims.gov.au/factsheet.jsp?speciesCode=0526
M. stellata
http://coral.aims.gov.au/factsheet.jsp?speciesCode=0274