Here's a little script I wrote for myself since I like light text on dark backgrounds (thanks again for the nice PerlMonks theme Vroom!) and /. doesn't have one... I know it's pretty suckie and could be a lot simpler. If you can make it better, please email it to me (firstname.lastname@example.org) as I use it everyday now. It doesn't werk yet for the ask/. section but when I find some time, I'll add that too. I hope someone else finds this useful. TTFN & Shalom.
p.s. I tried to submit this to the CUFP section but it didn't work so I thought I'd try here before giving up. Please put the script on your own server and change the $this to reflect your locale. Thanks!