There are 28 previous versions of this script.
/*<![CDATA[*//*
// ==UserScript==
// @name defBackgroundUp
// @description Replace #FFFFFF backgrounds #F7FCF5 - #F5FCF3 - #F9FFF6 ; rgb(249, 255, 246); #eef8ff ; # Firefox, Chrome, rgb(255, 255, 255); Opera , #ffffff;
// @include *
// @namespace userscripts.org/users/46776
// ==/UserScript==*/
function confBackg(){
var win=window,doc=document,getref=['body','table','td','div','html','dl','ul','pre'],
abg=function(win,tg){return win.getComputedStyle(tg,null).backgroundColor=='rgb(255, 255, 255)';},def=function(tg){tg.style.backgroundColor='#f6fff4';};
for(var a=8,n=0,tag,tg,temp=[];a--;){
tag=doc.getElementsByTagName(getref[a]);
for(var i=tag.length;i--;){tg=tag[i];if(abg(win,tg)){temp[n++]=tg;}}
};for(var j=temp.length;j--;){def(temp[j]);};temp=n=null;
}
document.addEventListener('load',confBackg(),false);
/*]]>*/
