[code] saturate on hover

<style>
#whitespace {
  display: inline-block;

  width:20%;
  height:auto;

  border: 3px double black;
  overflow: hidden;            /* clip the excess when child gets bigger than parent */
}
#whitespace img {
  display: block;
   width:100%;
  height:auto;

  }

  #whitespace:hover img {
  filter: saturate(170%);

</style>

<div id="whitespace"><img src="imgurl"></div>