World's First Flourescent Cat

The Telegraph introduces Mr. Green Genes:

The researchers made him so they could learn whether a gene could be introduced harmlessly into the feline's genetic sequence to create what is formally known as a transgenic cat.
...
To show that the gene went where it was supposed to go, the researchers settled on one that would glow.

My question: How's the poor chap supposed to hunt mice in the dark now? They'll spot him a mile away...