While we're at it, let's just change the mouse cursor to be Christmas-themed. i.e. https://www.cursors-4u.com/cursor/2011/12/25/tiny-christmas-...

A bunch more at https://www.cursors-4u.com/christmas/

For the animation, you need to use IE.

FWIW, I think changing the number colors on Christmas day is sufficient. I like HN's minimalist aesthetic