Hi Neil,
I didn't know where to search, but I found a few in this thread, and this is a post containing a very light scheme. That said, I now realize that I like the default scheme pretty well. So don't go out of your way to get a white theme just for me...
No worries. I took a look at that thread, is this the white theme you are talking about:
If yes, easy, the poster included the USCHEME.INI file, which means I'll just copy/paste into my config.
I haven't actually compared it yet to the default VSLICK theme, but for a long time that's what I was using and I agree, it is a pretty good config.