Something I made... a gift to you, Riot Games and the League of Legends Community:
For those who want to download the skin and use it clientside, I posted this on the fourth page:
Knock yourself out:
...well, don't really knock yourself out, but enjoy using the skin.
I'd recommend installing it with RAFManager:
Other people won't see it, like any custom skin. If you want other people to see it, you'll have to bug Riot about making an official skin.