I told Casey this on GCS forum.
"If the plants were bought without labels as to which form/clone/cultivar they are, then no one can really tell. We can all guess but if you are not sure, then don't label it. To fit as a cultivar (which is only a few), it is not only the colour. The growth pattern, the petiole as well as the teeth make a difference. Some of the characteristics can vary in different growing conditions.
People have sought after the Akai Ryu, only to find that it doesn't colour up for them and looks green year round. Others just walked into the local nursery, bought a cheap but nice looking red VFT and it stays like that for them in their growing conditions.
My personal take on this...don't bother what it is. If it grows well for you, always take cuttings as back up for the main plant to go into dormancy and not recovering.
For more info, read these:
Various clones
http://www.freewebs.com/vftshop/vftgallery.htm
See how a particular clone can be different when grown by different people
http://www.humboldt.edu/~rrz7001/Dionaea.html"