You should find it in YourHomeFolder->Library->Preferences->Media 100 Suite Preferences->Media 100 ColorFX Sets. This is a single file containing all your saved ColorFX presets. So while you should be able to move it to a new system, you cannot “merge” different ColorFX presets from 2 stations.
One thing you could do, though, is to create a timeline with different clips with the different ColorFX you want to transfer, and open that on the other computer. Then you can save them again on the 2nd system.
Initially, I did the 2nd part and that worked fine. All those settings are saved in the original program and upon clicking the clip, it showed the color fx settings with it. It was a bit confusing at first because re saving them to another name get more confusing moving from one system to another. But, it worked.