Examine source code of Black&Yellow Stripes

{
  "theme": {
    "images": {
      "theme_frame": "yellow-black-header.jpg"
    },
    "colors": {
      "frame": "#737373",
      "tab_background_text": "#737373"
    }
  },
  "version": "2.0",
  "name": "Black&Yellow Stripes",
  "manifest_version": 2,
  "description": "Black and yellow stripes."
}