@ people complaining it is too bright.
Here are 2 javascripts you can add as bookmark to chance colors. They get different results so check both of them out to see which one you like the most.
This one changes the background, link and text color in the color you want. Just adjust the numbers.
javascript: (function(){ var newSS, styles='* { background: #000000 ! important; color: #FFFFFF !important } :link, :link * { color: #FFFF00 !important } :visited, :visited * { color: #FF7209 !important }'; if(document.createStyleSheet) { document.createStyleSheet("javascript:'"+styles+"'"); } else { newSS=document.createElement('link'); newSS.rel='stylesheet'; newSS.href='data:text/css,'+escape(styles); document.getElementsByTagName("head")[0].appendChild(newSS); } } )();
```This one is more advanced and chances the colors. Can't explain it so just test it out.
javascript:(function(){function RGBtoHSL(RGBColor){with(Math){var R,G,B;var cMax,cMin;var sum,diff;var Rdelta,Gdelta,Bdelta;var H,L,S;R=RGBColor[0];G=RGBColor[1];B=RGBColor[2];cMax=max(max(R,G),B);cMin=min(min(R,G),B);sum=cMax+cMin;diff=cMax-cMin;L=sum/2;if(cMax==cMin){S=0;H=0;}else{if(L<=(1/2))S=diff/sum;else S=diff/(2-sum);Rdelta=R/6/diff;Gdelta=G/6/diff;Bdelta=B/6/diff;if(R==cMax)H=Gdelta-Bdelta;else if(G==cMax)H=(1/3)+Bdelta-Rdelta;else H=(2/3)+Rdelta-Gdelta;if(H<0)H+=1;if(H>1)H-=1;}return[H,S,L];}}function getRGBColor(node,prop){var rgb=getComputedStyle(node,null).getPropertyValue(prop);var r,g,b;if(/rgb((\d+),\s(\d+),\s(\d+))/.exec(rgb)){r=parseInt(RegExp.$1,10);g=parseInt(RegExp.$2,10);b=parseInt(RegExp.$3,10);return[r/255,g/255,b/255];}return rgb;}function hslToCSS(hsl){return "hsl("+Math.round(hsl[0]*360)+", "+Math.round(hsl[1]*100)+"%, "+Math.round(hsl[2]*100)+"%)";}var props=["color","background-color","border-left-color","border-right-color","border-top-color","border-bottom-color"];var props2=["color","backgroundColor","borderLeftColor","borderRightColor","borderTopColor","borderBottomColor"];if(typeof getRGBColor(document.documentElement,"background-color")=="string")document.documentElement.style.backgroundColor="white";revl(document.documentElement);function revl(n){var i,x,color,hsl;if(n.nodeType==Node.ELEMENT_NODE){for(i=0;x=n.childNodes[i];++i)revl(x);for(i=0;x=props[i];++i){color=getRGBColor(n,x);if(typeof(color)!="string"){hsl=RGBtoHSL(color);hsl[2]=1-hsl[2];n.style[props2[i]]=hslToCSS(hsl);}}}}})()
How to use: add a new bookmark, doesn't matter for which site, than right click and choose adjust. Choose the display name and in the place where you have to enter the adress you paste the script.
The downside is that everytime you open a new page you have to click it to change te colors. I don't know of a plugin that runs javascripts automatically but it's better than nothing.
PS: i didn't write these codes, just found them somewhere and they have been in my bookmarks for over a year now, can't recall the source.[/i][/i]