Examine source code of 1DHintergrund

{
  "name": "1DHintergrund ",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "d932ae37b5ab4c1cd66495b77fdfc1f8.jpg"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(5, 5, 5, 1)",
      "toolbar": "rgba(21, 150, 51, 1)",
      "bookmark_text": "rgba(3, 3, 3, 1)",
      "toolbar_field": "rgba(41, 38, 140, 0.97)",
      "toolbar_field_text": "rgba(10, 9, 9, 1)",
      "tab_line": "rgba(5, 5, 5, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9729ef23-ab32-4a83-8184-c507d13e035f}"
    }
  }
}