White -

hey, the first day (Saturday) when snow was falling (quarter of an inch or so - and disappeared the same evening).

Instead of white snow, this is maybe black snow (i.e. surprise):
An old boy after years of introspection may see that he maybe did sth on wrong grounds
http://www.nzz.ch/nachrichten/international/george_bushs_ploetzliche_reue_ueber_den_irak-krieg_1.1367934.html