Examine source code of Todor Cat

{
  "name": "Todor Cat",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "PNG_image.png"
    },
    "colors": {
      "frame": "rgba(41, 41, 41, 1)",
      "tab_background_text": "rgba(150, 224, 190, 1)",
      "toolbar": "rgba(56, 56, 56, 1)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(46, 46, 46, 1)",
      "toolbar_field_text": "rgba(235, 235, 235, 1)",
      "tab_line": "rgba(20, 158, 103, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6e99ff70-c501-44f4-b4f0-3cb14636306a}"
    }
  }
}