In an accompanying blogpost he also explains how he built it:
Back when I worked on the [EyeDroper API] article, I got interested in whether the API would also work in browser extensions, which it does! So I built a small extension that lets you grab colors from your screen, and store them locally for later reuse.
Bramus is a frontend web developer from Belgium, working as a Chrome Developer Relations Engineer at Google. From the moment he discovered view-source at the age of 14 (way back in 1997), he fell in love with the web and has been tinkering with it ever since (more …)