Transparency for share icon

Hi there, I maintain sites with custom themes that do not have white backgrounds, so the packaged share icon's lack of transparency stuck out like a sore thumb in the form of 4 white dots. I have attached a new gif with transparency for the white dots so that it will better blend with your background. This gif is sourced from the png as distributed by the http://groups.google.com/group/shareicon site. However, I would highly recommend moving towards the png because it offers semi-transparency, which looks a lot better and matches the standard feed.png look.