I'm still not sure how they broke that saber. It looks like one could adjust the brightness and get a decent fix (I set the white balance to the core of Vader's saber on this):

This brings out the Emperor's "slug" in a big way (never noticed it until I was playing with this yesterday).

The best way is saber replacement:

Special thanks to Ady for sending me an AE project file with his sabers so I could replicate them exactly using Photoshop. This is also responsible for my random signature.