A modified port of the SublimeText Flatland Theme for Chrome DevTools.
I installed this last night and it’s pretty neat. I’m so used to default white that it does take some time to get used to it. For me the issues is that most of the sites I work have a light background and the contrast between devtools and the site is jarring.
One thing to note is you do have to enable some experimental features but the read me outlines all the steps.
Maybe when Dayle Rees is bored he’ll port all of his color schemes. :-)