Sometimes when I come across a web page that has colors that are hard to read I just move on to something else. If the website has flashing text or music that usually causes immediate apopletic tab death, and trying to remember never to use that website again. But other times the color thing is getting in the way of something important. Enter wob and bow. If you take the wob and bow links here and drag them to your firefox tool bar, they will change the current page to either black text on a white backgroud (bow) or white text on a steel-blue background (wob). Instant readability. White on white text? No problem. Designer overstyled links so that you can’t find them? No problem. Background image interference? No problemo.

wob, bow

The javascript in the buttons will walk all the elements in the page and set the foreground and background, reset link colors for normal and visited links and should be cross-browser, but I only really use ff, so ymmv.