Dendrobium developing anthocyanin on leaves, help with ID?

[Longroots]

I've attached images of the anthocyanin developing, which seems odd as the bulb it's under is only the Sansi 15w, whivh my Cattleya seems to be finding just right.

I got this noID hybrid with the red ridges on the leaves and red veins in the canes (I believe because it has deep red velvet flowers), but the red tinges expanding into the leaves were not there previously.

I'm confused because I was under the impression dendrobium were very high light orchids, comparable to cymbidiums. I assume this hybrid needs less light than a Cattleya, which may help narrow down what crosses it is with pictures. It would also be nice to know it's crosses so I can properly understands it's care requirements.

It's one of the most striking dendrobiums I've seen so I'm happy I have it regardless. As it seems low light also, that's an extra benefit. Unfortunately the flowers began to fade so I'm now drying them, the attached picture is the only flower picture I can provide. If other pictures would be useful I can provide them!