Custom.css has stopped working in 32.0.1700.76 m Google Chrome update

Question

I use some themes for Google Developer Tools from this website: http://devthemez.com/themes/chrome-developer-tools

However, after the 32.0.1700.76 m update, all them

Answer 1

I couldn't really understand everything from Rob W but for me

manifest.json

{
  "name": "__something__",
  "version": "1",
  "content_scripts": [
    {
      "matches": ["__link_filter__"],
      "css": ["__filename__.css"]
    }
  ],
  "manifest_version": 2
}

and css file in same folder did what I wanted. How to load this folder is already answered here.