Hi Bernie
Providing the receptor accepts all the standard midi codes, and can transfer them to the appropriate VST, you should have no problems controlling them with Livestyler.
The Beauty of Livestyler is just like Wersi & Lionstracs you can load the VST on your computer and control it as if it was just like part of the arranger. (This also applies to external Midi control)
In many respects Livestyler is more flexible then the Wersi OAS GUI, and generations in front of Mediastation. (The main downside of the Mediastation is that you still need to be fairly knowledgeable about computers and music software, whereas Wersi OAS & Livestyler push it in to the background, allowing users pretty much the same ease of use as a normal hardware board)
BTW Frank’s setup is featured on the Livestyler site, and I am pretty sure he has both Colossus and Garritan in his arsenal.
Hope this helps

Bill