Examine source code of Red dagger

{
  "theme": {
    "images": {
      "theme_frame": "11.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#7d0011"
    }
  },
  "version": "2.0",
  "name": "Red dagger",
  "manifest_version": 2,
  "description": "red dagger"
}