Ok, so I took off the little tiling Lemmings background I added to here to add a bit more depth. It wasn't great anyway.
I'm still working on using Lemming animations to make new buttons and stuff for the theme. And I need to fix the smilies, which don't seem to be all working.
On a more relevant note, the wiki seems to have gotten off to a decent start. Nothing fancy, but fanciness can come as it pleases.