So how do i make this work on my site? Do i just add that code to the top of my site?

I’m happy and disappointed by your plugin at the same time.
I to was inspired by andy to write a plugin for jQuery to make a site black and white.

I put about 2 days of work into it only to discover someone else made it already.
But i took a quite different approach, i get all color values from elements and calculate their grey color.
This works on any browser, on every element you want, it is invoked like this: $(expr).makeGrey([duration]);
Yes, i made animation possible with this: http://plugins.jquery.com/project/color , it looks great, seeing a site fade to grey slowly…
I use filter for images only…

But guess what… my plugin doesn’t work with IE!!!
Don’t know why, because IE doesn’t have firebug
If i do it on .someclass it works, but with * doesn’t, and i can’t do color names yet.

If you like i can send you my code…