Looks to me like there is a slight shader mismatch.
First check to see if a shell is active that could be causing a mismatch, if there is a shell try rendering the scene and see if the mismatch remains, if it remains with an active shell you can turn off the shell and see if that takes care of it.
Did you happen to change translucency values on the G8F after you had applied the materials copy script? I have done that once or twice while using grafts and it created a similar mismatch.
If it is a mismatch due to a change made after running the script, try running the script again.
If not go to surfaces look under G8F and copy the torso settings, then paste to the Breastacular.
Again it looks like a shader mismatch, but trying to find where the mismatch is can be irritating, but if re running the copy script or copy and pasting doesn't work, You may have to compare settings between the Torso and Breastacular and try to find the discrepancy, It could be anything from a map plugged in where it should not be, to a difference in value on one of the various settings.