A search for Metro theme based on Jquer UI actually resulted in this post. JQUIT builder seems to be promising option but it’s now unmaintained and all builder links are removed. I further searched and found a much similar cusotmization of jQuery UI to match like Metro.
Here is the Jquery UI theme link after my little modification.
You can replace metro blue shade with other high/low contrast colors of windows 8 (purple, orange, green etc).
Here are the links for color set.