Examine source code of Shroomination

{
  "name": "Shroomination",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "firefoxtheme03.jpg"
    },
    "colors": {
      "frame": "rgba(89, 0, 255, 0.72)",
      "tab_background_text": "rgba(0, 255, 9, 1)",
      "toolbar": "rgba(52, 0, 112, 0.45)",
      "bookmark_text": "rgba(94, 255, 0, 1)",
      "toolbar_field": "rgba(84, 0, 181, 0.74)",
      "toolbar_field_text": "rgba(230, 255, 0, 1)",
      "tab_line": "rgba(230, 255, 0, 0.69)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{070d0312-e6c4-4731-b26e-67d83ee5fabf}"
    }
  }
}