I can't seem to find it anywhere. Does anyone have a link?

Thanks,
Rex

Never heard of it.
The reputation feature comes default with vBulletin.

this is a hack that when you get a lot of points it changes the bright green to orange

Ahh finally found it:

Here you go. http://www.vbulletin.org/forum/showthread.php?t=69836&highlight=reputation+hack

dont see much of a point in it really :s but then again it might just be me.

That's a nice hack. I installed it :).

Nice hack, installed here as well!

I am going to install it too! :-)