Examine source code of BlackSimpleTheme

{
  "manifest_version" : 2 ,
  "name" : "fireBlackSimpleTheme",
  "version" : "1.0",
  "theme": {
    "colors": {
      "frame": "#2a2a2a",
      "tab_background_text": "#bbbbbb",
      "tab_text": "#edf9fe",
      "tab_selected": "#212121",
      "tab_line": "#8ab4f8",
      "toolbar": "#212121",
      "toolbar_text": "#edf9fe",
      "toolbar_field": "#2c2c2c",
      "toolbar_field_text": "#edf9fe",
      "toolbar_field_border": "#444444",
      "bookmark_text": "#edf9fe",
      "icons" : "#edf9fe",
      "icons_attention": "#ff5555",
      "popup": "#1c1c1c",
      "popup_text": "#edf9fe",
      "popup_border": "#444444",
      "sidebar": "#1c1c1c",
      "sidebar_text": "#edf9fe",
      "sidebar_border": "#2a2a2a",
      "ntp_background": "#212121",
      "ntp_text": "#edf9fe",
      "button_background_hover": "#2a2a2a",
      "button_background_active": "#333333"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1afd0a98-5e46-493c-b4d0-439360f40233}"
    }
  }
}