Examine source code of Bochum VFL

{
  "name": "Bochum VFL",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "head.png"
    },
    "colors": {
      "frame": "rgba(0, 91, 165, 1)",
      "tab_background_text": "rgba(51, 51, 51, 1)",
      "toolbar": "rgba(0, 90, 181, 1)",
      "bookmark_text": "rgba(51, 51, 51, 1)",
      "toolbar_field": "rgba(0, 91, 165, 1)",
      "toolbar_field_text": "rgba(51, 51, 51, 1)",
      "tab_line": "rgba(51, 51, 51, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{277417f9-c235-49fe-9bca-c4946396bedc}"
    }
  }
}