Examine source code of Muffled Gold

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Muffled Gold",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(34, 33, 28)",
      "toolbar_text": "rgb(232, 232, 212)",
      "frame": "rgb(11, 11, 10)",
      "tab_background_text": "rgb(232, 232, 212)",
      "toolbar_field": "rgb(11, 11, 10)",
      "toolbar_field_text": "rgb(232, 232, 212)",
      "tab_line": "rgb(59, 50, 24)",
      "popup": "rgb(62, 57, 43)",
      "popup_text": "rgb(232, 232, 212)",
      "ntp_background": "rgb(11, 11, 10)",
      "popup_border": "rgb(11, 11, 10)",
      "popup_highlight_text": "rgb(232, 232, 212)",
      "popup_highlight": "rgb(62, 57, 43)",
      "toolbar_bottom_separator": "rgb(11, 11, 10)",
      "toolbar_field_border_focus": "rgb(62, 57, 43)",
      "toolbar_field_border": "rgb(11, 11, 10)",
      "tab_loading": "rgb(59, 50, 24)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{966ea035-b43a-483d-abe0-c729373476ac}"
    }
  }
}