Vividly

This plugin adds a simple way to let your readers enable or disable a high contrast stylesheet for the visually impaired. Once a reader enables the high contrast stylesheet the setting will be stored in a cookie which means the setting will not only stay one when navigating to other pages but it will also be on when the reader returns.

Once the plugin is installed, add your high contrast stylesheet to the root of your theme directory and name it vividly.css. To toggle the high contrast stylesheet, add a link or button and call the Vividly.toggle() method in its onclick handler.