Examine source code of Light with Greens

{
  "manifest_version": 2,
  "default_locale": "en",
  "browser_specific_settings": {
    "gecko": {
      "id": "Light_with_Greens@firefox.clu-os.net",
      "strict_min_version": "61.0"
    }
  },
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "version": "0.1.1",
  "theme": {
    "colors": {
      "frame": "#f8f8f0",
      "frame_inactive": "#d8d8d0",
      "tab_line": "#00000000",
      "tab_selected": "#00000018",
      "tab_loading": "#00cf0080",
      "tab_text": "#080800",
      "tab_background_text": "#606050",
      "tab_background_separator": "#00000020",
      "toolbar": "#00000018",
      "toolbar_top_separator": "#ffffff80",
      "toolbar_bottom_separator": "#00000080",
      "toolbar_vertical_separator": "#00000020",
      "toolbar_field_separator": "#00000020",
      "toolbar_text": "#080800",
      "toolbar_field": "#fffff8c0",
      "toolbar_field_focus": "#fffff8f0",
      "toolbar_field_border": "#00000000",
      "toolbar_field_border_focus": "#00000000",
      "toolbar_field_text": "#080800",
      "toolbar_field_text_focus": "#080800",
      "toolbar_field_highlight": "#00cf0080",
      "toolbar_field_highlight_text": "#080800",
      "button_background_hover": "#00000018",
      "button_background_active": "#fffff8f0",
      "icons": "#30c030",
      "icons_attention": "#0a84ff",
      "popup": "#fffff8f0",
      "popup_border": "#f8f8f0",
      "popup_text": "#080800",
      "popup_highlight": "#00cf0080",
      "popup_highlight_text": "#080800",
      "sidebar": "#f8f8f0",
      "sidebar_border": "#00cf0080",
      "sidebar_text": "#080800",
      "sidebar_highlight": "#00cf0080",
      "ntp_background": "#f8f8f0",
      "ntp_text": "#080800"
    },
    "properties": {
      "color_scheme": "light",
      "content_color_scheme": "light"
    }
  }
}