We had a big cold front come in so the timing is perfect!
Below is a link to a lot of pictures you can use on your computer as wallpaper. Beautiful Winter scenes!
My whole screen is full of a blue background with nothing but snowflakes. lol
For those of you who don't know how to do it, follow these easy instructions. Not sure how it would work on a Mac though.
1. Click on a picture you like.
2. When that picture comes up, at the bottom of the picture choose "Enlarge picture."
3. The larger size picture appears, then right click your mouse and you should have a small menu where one of the options reads "Set as background" or something similar.
Make sure to ENLARGE the picture first, or you'll get a smaller size picture instead.
If you do this I'd be interested to know what picture you chose!
Here is a link that might be useful: Winter/Christmas Wallpaper