I have no idea.
It's a Safety warning though, so I assume that it says something along the lines of "Yada yada do not stare at screen too long, stupid yada yada epilepsy yada" lol
I recently beset upon myself the task of beautifying BW2 to suit my Evil tastes.
Along with my own custom designs I will most likely implement the skins of a few others, of course I will give credit where credit is due.
Here are some screenshots of what I have done not less than 5 minutes...