You can use CSS to display a colored image as black & white on a web page and the image turned colored when someone hovers the mouse over the picture.
Here’s the HTML and CSS code.
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<div class="primary"> <img src="http://placekitten.com/500/500" /> </div> <style type="text/css"> .primary { cursor: pointer; } .primary img { filter: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg'><filter id='grayscale'><feColorMatrix type='matrix' values='0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0 0 0 1 0'/></filter></svg>#grayscale"); /* Firefox 10+, Firefox on Android */ -webkit-filter: grayscale(100%); filter: grayscale(100%); filter: gray; /* IE 6-9 */ -moz-transition: all 0.2s ease-in; -o-transition: all 0.2s ease-in; -webkit-transition: all 0.2s ease-in; transition: all 0.2s ease-in; } .primary:hover img { filter: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg'><filter id='grayscale'><feColorMatrix type='matrix' values='1 0 0 0 0, 0 1 0 0 0, 0 0 1 0 0, 0 0 0 1 0'/></filter></svg>#grayscale"); -webkit-filter: none; filter: none; } </style> |