Examine source code of Dark Night Moss

{
  "manifest_version": 2,
  "version": "2.0",
  "name": "Dark Night Moss",
  "theme": {
    "colors": {
      "toolbar": "rgb(32, 32, 32)",
      "toolbar_text": "rgb(199, 199, 199)",
      "frame": "rgb(25, 25, 25)",
      "tab_background_text": "rgb(199, 199, 199)",
      "toolbar_field": "rgb(32, 32, 32)",
      "toolbar_field_text": "rgb(199, 199, 199)",
      "tab_line": "rgb(88, 126, 117)",
      "popup": "rgb(32, 32, 32)",
      "popup_text": "rgb(199, 199, 199)",
      "button_background_active": "rgb(110, 110, 110)",
      "frame_inactive": "rgb(25, 25, 25)",
      "icons_attention": "rgb(88, 126, 117)",
      "icons": "rgb(199, 199, 199)",
      "ntp_background": "rgb(25, 25, 25)",
      "ntp_text": "rgb(199, 199, 199)",
      "popup_border": "rgba(199, 199, 199, 0.33)",
      "popup_highlight_text": "rgb(199, 199, 199)",
      "popup_highlight": "rgb(110, 110, 110)",
      "sidebar_border": "rgb(32, 32, 32)",
      "sidebar_highlight_text": "rgb(25, 25, 25)",
      "sidebar_highlight": "rgb(88, 126, 117)",
      "sidebar_text": "rgb(199, 199, 199)",
      "sidebar": "rgb(32, 32, 32)",
      "tab_background_separator": "rgb(88, 126, 117)",
      "tab_loading": "rgb(88, 126, 117)",
      "tab_selected": "rgb(88, 126, 117)",
      "tab_text": "rgb(32, 32, 32)",
      "toolbar_bottom_separator": "rgb(32, 32, 32)",
      "toolbar_field_border_focus": "rgb(88, 126, 117)",
      "toolbar_field_border": "rgb(32, 32, 32)",
      "toolbar_field_focus": "rgb(32, 32, 32)",
      "toolbar_field_highlight_text": "rgb(32, 32, 32)",
      "toolbar_field_highlight": "rgb(88, 126, 117)",
      "toolbar_field_separator": "rgb(88, 126, 117)",
      "toolbar_field_text_focus": "rgb(199, 199, 199)",
      "toolbar_top_separator": "rgb(32, 32, 32)",
      "toolbar_vertical_separator": "rgba(199, 199, 199, 0.33)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6e4a8034-e91b-4a50-9d15-3280f39043fb}"
    }
  }
}