http://intheface.me/ colour changing JS

original

if((!jQuery.browser.msie)||(jQuery.browser.msie&&jQuery.browser.version.substring(0,1)>9)){jQuery(document).ready(setInterval(function(){changeSiteColor(jQuery('#logo, #menu-menu a, #col-itf .heading, #col-itf .more-link, #col-itf .view-page, .title, .current, #signup, .social'),jQuery('#col-itf .tri, #col-itf .tri-readmore'),jQuery('#col-releases .heading, #col-releases .more-link, #col-releases .view-page, #col-mixes .heading, #col-mixes .more-link, #col-mixes .view-page, #col-single .heading'),jQuery('#col-releases .tri, #col-releases .tri-readmore, #col-mixes .tri, #col-mixes .tri-readmore, #col-single .tri'))},11000));function changeSiteColor(backgroundsA,bordersA,backgroundsB,bordersB){var colorA='rgb('+randRange(0,200)+','+randRange(0,200)+','+randRange(0,200)+')';var darkerA=darkerColor(colorA,.4);var colorB=lighterColor(colorA,.3);var darkerB=darkerColor(colorB,.4);backgroundsA.css('background-color',colorA);bordersA.css('border-top-color',darkerA);backgroundsB.css('background-color',colorB);bordersB.css('border-top-color',darkerB);}
function randRange(lowVal,highVal){return Math.floor(Math.random()*(highVal-lowVal+1))+lowVal;};var lighterColor=function(color,ratio){return changeColor(color,ratio,false);};var darkerColor=function(color,ratio){return changeColor(color,ratio,true);};var changeColor=function(color,ratio,darker){color=color.replace(/^\s*|\s*$/,'');color=color.replace(/^#?([a-f0-9])([a-f0-9])([a-f0-9])$/i,'#$1$1$2$2$3$3');var difference=Math.round(ratio*256)*(darker?-1:1),rgb=color.match(new RegExp('^rgba?\\(\\s*'+'(\\d|[1-9]\\d|1\\d{2}|2[0-4][0-9]|25[0-5])'+'\\s*,\\s*'+'(\\d|[1-9]\\d|1\\d{2}|2[0-4][0-9]|25[0-5])'+'\\s*,\\s*'+'(\\d|[1-9]\\d|1\\d{2}|2[0-4][0-9]|25[0-5])'+'(?:\\s*,\\s*'+'(0|1|0?\\.\\d+))?'+'\\s*\\)$','i')),alpha=!!rgb&&rgb[4]!=null?rgb[4]:null,decimal=!!rgb?[rgb[1],rgb[2],rgb[3]]:color.replace(/^#?([a-f0-9][a-f0-9])([a-f0-9][a-f0-9])([a-f0-9][a-f0-9])/i,function(){return parseInt(arguments[1],16)+','+parseInt(arguments[2],16)+','+parseInt(arguments[3],16);}).split(/,/),returnValue;return!!rgb?'rgb'+(alpha!==null?'a':'')+'('+Math[darker?'max':'min'](parseInt(decimal[0],10)+difference,darker?0:255)+', '+Math[darker?'max':'min'](parseInt(decimal[1],10)+difference,darker?0:255)+', '+Math[darker?'max':'min'](parseInt(decimal[2],10)+difference,darker?0:255)+(alpha!==null?', '+alpha:'')+')':['#',pad(Math[darker?'max':'min'](parseInt(decimal[0],10)+difference,darker?0:255).toString(16),2),pad(Math[darker?'max':'min'](parseInt(decimal[1],10)+difference,darker?0:255).toString(16),2),pad(Math[darker?'max':'min'](parseInt(decimal[2],10)+difference,darker?0:255).toString(16),2)].join('');};var pad=function(num,totalChars){var pad='0';num=num+'';while(num.length<totalChars){num=pad+num;}
return num;};}

Rewrite - in progress

if (!jQuery.browser.msie || jQuery.browser.version.substring(0, 1) > 9) {
    function pad(num, totalChars) {
        var padding = new Array(totalChars - num.length).join("0");
        return padding + num;
    }

    function changeColor(color, ratio, darker) {
        color = color.replace(/^\s*|\s*$/,'');
        color = color.replace(/^#?([a-f0-9])([a-f0-9])([a-f0-9])$/i,'#$1$1$2$2$3$3');
	var difference = Math.round(ratio * 256) * (darker?-1:1),
	    rgb = color.match(new RegExp('^rgba?\\(\\s*'+'(\\d|[1-9]\\d|1\\d{2}|2[0-4][0-9]|25[0-5])'+'\\s*,\\s*'+'(\\d|[1-9]\\d|1\\d{2}|2[0-4][0-9]|25[0-5])'+'\\s*,\\s*'+'(\\d|[1-9]\\d|1\\d{2}|2[0-4][0-9]|25[0-5])'+'(?:\\s*,\\s*'+'(0|1|0?\\.\\d+))?'+'\\s*\\)$','i')),
            alpha = !!rgb && rgb[4]!=null?rgb[4]:null,decimal=!!rgb?[rgb[1],rgb[2],rgb[3]]:color.replace(/^#?([a-f0-9][a-f0-9])([a-f0-9][a-f0-9])([a-f0-9][a-f0-9])/i, function() {
	return parseInt(arguments[1], 16) + ',' + parseInt(arguments[2], 16) + ',' + parseInt(arguments[3], 16);
}).split(/,/),
        returnValue;
	return !! rgb ? 'rgb'+(alpha!==null?'a':'') + '(' + Math[darker?'max':'min'](parseInt(decimal[0],10)+difference,darker?0:255)+', '+Math[darker?'max':'min'](parseInt(decimal[1],10)+difference,darker?0:255)+', '+Math[darker?'max':'min'](parseInt(decimal[2],10)+difference,darker?0:255)+(alpha!==null?', '+alpha:'')+')':['#',pad(Math[darker?'max':'min'](parseInt(decimal[0],10)+difference,darker?0:255).toString(16),2),pad(Math[darker?'max':'min'](parseInt(decimal[1],10)+difference,darker?0:255).toString(16),2),pad(Math[darker?'max':'min'](parseInt(decimal[2],10)+difference,darker?0:255).toString(16),2)].join('');
    }


    function darkerColor(color, ratio) {
	return changeColor(color,ratio,true);
    }

    function lighterColor(color, ratio) {
	return changeColor(color,ratio,false);
    }

    function randRange(lowVal, highVal) {
	return Math.floor(Math.random() * (highVal-lowVal + 1)) + lowVal;
    }

    function changeSiteColor(backgroundsA, bordersA, backgroundsB, bordersB) {
	var colorA='rgb('+randRange(0,200)+','+randRange(0,200)+','+randRange(0,200)+')';
	var darkerA=darkerColor(colorA,.4);
	var colorB=lighterColor(colorA,.3);
	var darkerB=darkerColor(colorB,.4);
	backgroundsA.css('background-color',colorA);
	bordersA.css('border-top-color',darkerA);
	backgroundsB.css('background-color',colorB);
	bordersB.css('border-top-color',darkerB);
    }

    jQuery(document).ready(setInterval(function () {
        changeSiteColor(jQuery('#logo, #menu-menu a, #col-itf .heading, #col-itf .more-link, #col-itf .view-page, .title, .current, #signup, .social'),jQuery('#col-itf .tri, #col-itf .tri-readmore'),
			jQuery('#col-releases .heading, #col-releases .more-link, #col-releases .view-page, #col-mixes .heading, #col-mixes .more-link, #col-mixes .view-page, #col-single .heading'),
			jQuery('#col-releases .tri, #col-releases .tri-readmore, #col-mixes .tri, #col-mixes .tri-readmore, #col-single .tri'))
    }, 11000));
}