Cold weather Holiday designs for small kids with hats on!

I will be painting faces at a local christmas parade this weekend. I imagine 3-4 hours of super fast, simple designs on little kids. This will be my first outdoor christmas/winter painting gig. I am getting my design board ready and Im a little concerned about the idea that its going to be cold and everyone will have hats on. 1. Whats the general consensus about quick designs for small children at outdoor christmas events? and 2. Will my paints act funny when its cold outside? Thanks<3

Use hot water in your rinse, and your spritzer....won't stay that way, but it helps in the beginning. Rudolph noses & little antlers on the forehead work pretty good, a Rudolph on the side of the face, a bauble, etc. It's really their choice, although quick faces are usually simple and it's not too torturous...It's part of the memory!! Have fun!