Awesome

colofilter.css

Colofilter.css - Duotone filters made with CSS !

More info at http://lukyvj.github.io/colofilter.css

Codepen demo

You can check this codepen collection using colofilter.css : http://codepen.io/collection/AGpJpm/

If you need to make colorify works with background-image please, take a look at : This codepen demo

( But I'm about to update colofilter.css to make it easier to work with background images )

Check demo image (heavy)

Stargazers over time