JSFiddle - React, Tailwind, and code Playground

HTML

<img src="http://www.macprime.ch/_images/idb/Steve-Jobs-Portrait.jpg" />

CSS

img {-webkit-filter:grayscale(1);-webkit-filter:saturate(0%);-webkit-transition:2s ease;width:200px;height:200px}
img:hover {-webkit-filter:grayscale(0)}

JavaScript

// Only on Retina-Displays!

// The Image loads fuzzy, then it gets sharp as long as the transition runs and then truns back to fuzzy-mode again as soon as the transition ends… :-/

// Apply your vendor-prefix instead of -webkit if you don't have Chrome or Safari running, to keep this demo-code simple I've chosen -webkit only