jQuery Color Cycle

jQuery plugin that continuously fades the background color of selected element(s). Has options for setting colors as an array as well as animation time and loop time.

pick.js

Pick things with ease.

Idako Password color & validation

jQuery plugin that allows you to colorfully represent a password, and apply security acceptance filters.

jIzzy

jQuery plugin for multimedia control, as well as many other useful features.

JeeGoo Color

jQuery color picker plugin, flexible color picker based on jeegoopopup.

Border-based Chart Builder

jQuery Charting Plugin. You supply the data and borderchart builds a chart in the form of a colored border around your html element.