Examine source code of Dark Silver Orange

{
  "theme": {
    "images": {
      "theme_frame": "Dark_Silver_Orange.jpg"
    },
    "colors": {
      "frame": "#b5b1b1",
      "tab_background_text": "#fcf9f9"
    }
  },
  "version": "2.0",
  "name": "Dark Silver Orange",
  "manifest_version": 2,
  "description": "Dark with Silver and Orange"
}