The background doesn't extend across the entire screen of my browser when I'm on a Macbook Pro 16 inch. The colors are nice and it's not animated (which is fine by me). I can easily read my tabs and bookmark toolbar too. But since the theme doesn't fit the entire screen I can't give it a higher score than 3. Nice job though!

Also, the word "Christmas" in the theme name is misspelled, if you rename it it could make it easier to find.