Crimson Trace has been in the process of bringing green laser modules to their excellent line of LaserGrips. It has been a challenge to pack power hungry green lasers into the reliable, compact packages that Crimson Trace is known for but they are making headway. In fact, the first green LaserGrips are now available.
The LG-401G and LG-404G for full size and compact 1911s respectively are now available. Check them out at Crimson Trace.