Examine source code of C. Spitzweg

{
  "name": "C. Spitzweg",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Spitzweg.jpg"
    },
    "colors": {
      "frame": "rgba(122, 204, 29, 1)",
      "tab_background_text": "rgba(255, 92, 231, 1)",
      "toolbar": "rgba(255, 179, 0, 0.52)",
      "toolbar_field": "rgba(116, 204, 29, 0.52)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{20dff96f-9521-4fd9-a27d-c9dbf490da50}"
    }
  }
}