On April Fools Day 2011, Off on a Tangent displayed with a modified template that showed all colors in the inverse like a photographic negative. The announcement read as-follows:
Just a quick site maintenance note: I’ve uploaded the negatives of some new updates. They may take up to 24-hours to develop. In the mean time, you may need to use a negative viewer to see the site properly.
Sorry for any inconvenience!
In case you are wondering, I do all of my web development in 120 format on a Mamiya m645.