Examine source code of Muted Jade

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Muted Jade",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(135, 180, 168)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(90, 142, 126)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(77, 128, 112)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(255, 255, 255)",
      "popup": "rgb(77, 128, 112)",
      "popup_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(255, 255, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{cca25ddd-eb63-48fc-9ee3-f9176cd06339}"
    }
  }
}