I'm not sure which is more wrong: the fact that they're working on glow-in-the-dark sperm or the fact that they're testing it on hamsters:

An Oxford University team extracted a gene that manufactures a green protein in a jellyfish and used it to create green sperm in hamster testicles.

Control Hamster to Test Hamster: "Phil, can you turn your sperm off? I'm trying to sleep."