Thanks! It's tricky coming up with different ways to say "glowing", especially if you're trying to stay away from "effulgent". Hee!

I don't know if it was an ulterior motive, so much as an adjacent one! I mean, would he really need another reason to go check out the phosphorescent effect? But the timing being what it is, and the suggestive language, he could hardly have missed the opportunity that presented itself.