Very nice Mat. I have bought two Colorado Sunburst nems, and both times they died within 3-4 months. I have never been able to figure out why, as I had regular BTAs in the tank at the same time before, during and after when the Sunburst was there.
Lots of folks keep them successfully, and I'm sure you will as well, but it got too expensive for me. I also stop buying things if I cannot keep it alive after a couple tries. Doesn't seem humane.