No such thing.......You either have the Peruvian/Basin form, or the Orinoco form available to the hobby.........There are another 5 or 6 different forms waiting to be described and reviewed.......
However, there is no "selective breeding" with Matas.......There really isn't any breeding with Matas unless you have a deep pond......Only one person is doing it with any kind of consistancy.....
If you want to do Turtles, do the million and one RES morphs available......You can go from egg to egg in the time it takes to acclimate a Mata or any type of non-native Turtle........Pink Bellies and a few others could be done the same way, but producing Turtles is not an easy task if you don't have the resources to do so......