Brighten your day

colours.js

var $all = jQuery('*'),
	R = function (n) {
		return ~~(Math.random() * n);
	}
setInterval(function () {
	$all.eq(R($all.length)).css('backgroundColor','rgb('+R(255)+','+R(255)+','+R(255)+')')
}, 10);

minified.js

// Tweet-sized version (140 bytes)
A=$('*'),R=Math.random,M=-257;setInterval(function(){A.eq(R()*A.length).css('background','rgb('+~(R()*M)+','+~(R()*M)+','+~(R()*M)+')')},9)

rotate.js

var $all = jQuery('*'),
	R = function (n) {
		return ~~(Math.random() * n);
	}
setInterval(function () {
	$all.eq(R($all.length)).css('WebkitTransform','rotate('+R(360)+'deg)')
}, 10);