vk transparent recalc colors

function make_transparent(){
   function hex2rgba(hexcolor,ret_struct){
      var rgb=hex2rgb(hexcolor);
      var r=rgb[0];
      var g=rgb[1];
      var b=rgb[2];
      var min, a = ( 255 - (min = Math.min(r, g, b)) ) / 255;
      if (r==255 && g==255 && b==255) return 'rgba(255,255,255,0.7)';
      var color={
           r    : r = 0|( r - min ) / a,
           g    : g = 0|( g - min ) / a,
           b    : b = 0|( b - min ) / a,
           a    : a = (0|1000*a)/1000,
           rgba : 'rgba(' + r + ', ' + g + ', ' + b + ', ' + a + ')'
       };
       return ret_struct?color:color.rgba;
   }
   function process_node(node){
      if (node && node.currentStyle){
         cs=node.currentStyle;
         for (var key in cs)
            if (cs[key] && key.match(/color/i) && cs[key].match(/^\s*#[A-F0-9]+\s*$/i)){
               node.style[key]=hex2rgba(cs[key])+' !important';
            }
      }
   }


   function FindAndProcessNodes(_node,func){
       var childItem =0;
       while(_node.childNodes[childItem]){
           func(_node.childNodes[childItem]);
           if (!(_node.childNodes[childItem].nodeType==3)){
            FindAndProcessNodes(_node.childNodes[childItem],func);
           }
           childItem++;
       }
   }
   FindAndProcessNodes(geByTag1('body'),process_node)
}
make_transparent();