For those of you interested in these sorts of things, I have begun to make some of the changes to Houyhnhnm Land. It is nowhere near done (indeed, it is just barely started), and I still want to put in tabs, rework the sidebar, modify the entry-format a bit, etc., etc. But you can get a bit of a feel for the direction I'm going. I'm not a big fan of green, but I find it much easier on my eyes. I have a slight color deficiency in the red spectrum; now that I've changed from dark red to bright green, I can see the links more easily than I could before. I had never really noticed the problem, until I had something to contrast it with. There's lots and lots still to do, with the color scheme and whatever else. But you can see what's going on, if you want. (At this point, of course, I can't guarantee how it will look in every browser.) Naturally, I'm interested in any thoughts you might have.
UPDATE (Dec 24): For cool stuff I'm trying out at HL, run your cursor over the links in the navigation box. Also, refresh your browser while looking at the post pictures.