expando-figure
When you hover over this clickable image, it enlarges and the color fully saturates.
You can see this used to nice effect on this landing page.
One of the tricks for making this work in the context of a figure (as opposed to a densely packed photo-grid), is to give the figcaption element a sticky position. Otherwise, I find the image pushing into the caption (as opposed to clipping) especially on Safari.