What's the opposite of "going Green"?

We have opened up the pool for the season.  First thing this morning it looked like this:

Fancy a dip?

Not so much, eh?

Don't worry.  Already after a good dose of chlorine and a few hours of filtering it has turned from lurid lime, through jade, to a rather nice shade of celadon.  Before you know it it'll be sparklingly clear.  So, stop by again in a day or two - and bring your cozzie!

On second thoughts, with the water temperature a bracing 60F, you might want to make that a wetsuit.