Examine source code of Ride Along

{
  "name": "Ride Along",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "DSC_1966.JPG"
    },
    "colors": {
      "frame": "rgba(20, 16, 19, 1)",
      "tab_background_text": "rgba(235, 223, 223, 1)",
      "toolbar": "rgba(214, 28, 195, 1)",
      "bookmark_text": "rgba(17, 11, 51, 1)",
      "toolbar_field": "rgba(199, 219, 237, 1)",
      "toolbar_field_text": "rgba(15, 13, 13, 1)",
      "tab_line": "rgba(20, 17, 17, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9421d2e3-9a7c-4680-bf55-4c54c12bc69f}"
    }
  }
}