I took spray bottles, filled them with water, and added a few drops of food coloring to each one. Destructo had a blast spraying the snow and making it colored. He experimented with mixing different colors and seeing what color resulted. Of course I didn't think to take pictures of this. Try it with your kiddos though. I bet they love it as much as Kai did.
Check out my awesome artistic bird house picture and adorable kid in the snow pics.