A sample devtools theme extension using the new API
Enable DevTools experiments in about:flags, then open DevTools, open Settings > Experiments, and toggle Allow UI themes experiment.
Read this: https://code.google.com/p/chromium/issues/detail?id=318566#c33
Use the format of this repo to make your own devtools theme, just make a styles.css that is actually awesome. You can also port any of the righteous themes at devthemez.com to this new format. Or ask their maintainers to.
You can also use Yeoman to easily create new themes: https://github.com/zenorocha/generator-devtools-theme
Then publish to the web store. Please add "devtools theme" to the name so people can easily find them!
Additionally, I would recommend looking at what's happening at zero-base-themes, which is creating a platform for DevTools theming. Looks great!
