I've also noticed the same on one of my potatoes http://i.imgur.com/ReEVh40.jpg

http://stackoverflow.com/questions/7538771/what-is-webkit-focus-ring-color

been around for years. css resets remove it, though.

In my opinion, it's awesome usability! Great for those who use their pc's without a mouse. I've been noticing it more and more, could just be that the colour has changed recently (speaking with some dev buddies, its always been there).

Lately? Man, it is there for around a year. It was a irradiating yellowish outline in the past years and they changed it to a better blue glow outline.

I actually had noticed a few Chrome updates ago that many form buttons weren’t showing the :focus state for some reason. But apparently that’s only on certain sites…perhaps they were using a reset that Chrome is now respecting.

I usually override this and always keep a SASS mixin in my toolbox for this, CSS resets in my experience actually don't remove this.

But I agree it's very important to include good focus states on your buttons, especially for forms where people will tab through the textboxes (and eventually to the submit button). But that blue 'halo' may not always (and usually doesn't) jive with the rest of the design.

Personally I'm a big fan of the focus state with the off-color bottom border (see Slack's website for a good example). I noticed even Google has this style of focus state on some of their pages the other day.

Also seeing it on DN's buttons. http://d.pr/i/vA1h/2G0aTBtB