小程序整页变黑白

page{

  -webkit-filter: grayscale(100%); 

  -moz-filter: grayscale(100%); 

  -ms-filter: grayscale(100%); 

  -o-filter: grayscale(100%); 

  filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);  

  _filter:none; 

}