Hi! joeypc is available on GitHub.
joeypc is a JavaScript/jQuery framework for web site entropy from Dan McKeown
joeypc uses jQuery for DOM selection, and then uses JavaScript to come up with random values for functions like joeypc_random_light_background(). Other functions, like joeypc_change_text_color(color) accept a parameter for how to change a property. Both can be chained to jQuery events or called through other techniques.