Realise you're joking.

The green is water luminescence as it relaxes after being hit by radiation.

Edit: As in the rest of this thread. Checked this out and there is a 420nm emission line in a non aqueous solution of a Uranium compound. http://pubs.rsc.org/en/content/articlehtml/2013/ra/c3ra22712j

So The above claim is indeed incorrect in the case of the Uranium glass.