What is up?

If you have a Gmail account, you can go into the settings tab and pick a theme for your account. The one I chose, "Tree" is pretty cool. I've discovered that it displays the weather outside for you as your theme. So lately I've seen this:


I've also seen this:


But I didn't expect to see this one anymore:

I'm kind of sad you can't see the tree on this one. It's covered with snow.

What's up with the snow, eh?