Having moved them out of the red transparent test tube rack, and Blu tacking them outside on my desk next to a Pheidole test tube, the queen must be fairly happy with things as she laid a whole new egg sometime last night!
After they ate the last 3 and all of their eggs, I had given up hope.
I gave them 3/4 of a small wood roach, and they have been munching on it for a few days now, so they that helps.
But their test tube is not covered from light at all, only a small piece of red cellophane wrap loosely drapped over one side of the test tube.
So I guess the it's not the ambient light so much that bothers them, but having a constant stable environment more so.
The Pheidole colony next door is exposed to light pretty much all the time, and the queen is laying eggs.
I in fact saw an egg stuck on the queen's gaster for a while a few days ago 
So I did plan to release these ants, but now emotionally, I am uncertain I want to do so.
Sigh...