Color-picker similar to the one in Photoshop. jQolor can be used to decorate a text input field.
Apply a random RGB value to elements.
jQuery plugin for color palette.
imgcolr is a plugin for grabbing the dominant color of a given image’s borders. By using it, you can make the web more interesting, for example, create a slider that the page’s background color is dynamicly adapted for the current image, with a few lines of code.
jQuery plugin for color manipulation on images.
Minimalistic jQuery color picker with color wheel and numeric input modes.