General Concept: The Mushroom Observer website provides a number of color themes based on different groups of mushrooms. By default each page gets a randomly selected theme. However, a user can choose to use a particular theme throughout the site by selecting the theme on the user preference page.

The idea of using mushrooms for color follows in the tradition of using mushrooms to dye fabrics. Each color in a theme was pulled from a photograph included in the site from the given group. The colors attempt to express the characteristic colors of the group. In a few cases, the images were adjusted using an automatic color balance operation in order to get a more characteristic color.

The following links describe each of the available themes including links to the images the colors were extracted from: