If you're cold, they're cold.
although you aren't cold, and they aren't either, but just play along okay?
If you're looking to make these mischievous bundles of 'fun' a little cuter, than do I have the solution for you.
This resource pack adds 5 new creeper variants, and also requires Optifine. Not much else can be said, other than this is just a simple resource pack designed for compatibility and for those winter vibes I know a lot of you guys crave.
Remember: This requires Optifine. It's pretty boring without it.