html, 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%);
	opacity:0.9;
	*/
}