/*
html {
  -webkit-filter: grayscale(100%);
  -moz-filter: grayscale(100%);
  -ms-filter: grayscale(100%);
  -o-filter: grayscale(100%);
  filter: grayscale(100%);
  filter: progid:dximagetransform.microsoft.basicimage(grayscale=1);
 }

.site-gray, .site-gray *,html{
	filter: gray !important;
	filter: progid:dximagetransform.microsoft.basicimage(grayscale=1);
	filter: grayscale(100%);
	-webkit-filter: grayscale(100%);
	-moz-filter: grayscale(100%);
	-ms-filter: grayscale(100%);
	-o-filter: grayscale(100%); 
}
*/