Examine source code of Synapsis Dark

{
  "manifest_version": 2,
  "version": "1.1",
  "name": "Synapsis Dark",
  "theme": {
    "colors": {
      "frame": "#27353f",
      "tab_background_text": "#6A6F78",
      "toolbar": "#304455",
      "bookmark_text": "#E5E7EA",
      "tab_text": "#E5E7EA",
      "tab_line": "#304455",
      "toolbar_field": "#798a96",
      "toolbar_field_text": "#9DA5B4",
      "ntp_background": "#304455",
      "ntp_text": "#E5E7EA",
      "popup": "#304455",
      "popup_text": "#E5E7EA",
      "popup_highlight": "#27353f",
      "popup_highlight_text": "#E5E7EA",
      "sidebar": "#304455",
      "sidebar_text": "#E5E7EA",
      "sidebar_highlight": "#27353f",
      "sidebar_highlight_text": "#E5E7EA"
    }
  }
}