Examine source code of White O Black

{
  "manifest_version": 2,
  "version": "1.2",
  "name": "White O Black",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "tab_line": "white",
      "tab_loading": "white",
      "tab_text": "white",
      "tab_selected": "#303030",
      "tab_background_separator": "#505050",
      "tab_background_text": "white",
      "icons": "white",
      "icons_attention": "white",
      "frame": "#101010",
      "frame_inactive": "#101010",
      "button_background_active": "#505050",
      "button_background_hover": "#505050",
      "ntp_background": "#303030",
      "ntp_text": "white",
      "popup": "#303030",
      "popup_border": "#303030",
      "popup_text": "white",
      "popup_highlight": "white",
      "popup_highlight_text": "black",
      "sidebar": "#303030",
      "sidebar_border": "#505050",
      "sidebar_text": "white",
      "sidebar_highlight": "white",
      "sidebar_highlight_text": "black",
      "toolbar": "#303030",
      "toolbar_top_separator": "black",
      "toolbar_bottom_separator": "black",
      "toolbar_vertical_separator": "#505050",
      "toolbar_text": "white",
      "toolbar_field": "#404040",
      "toolbar_field_focus": "#404040",
      "toolbar_field_border": "#404040",
      "toolbar_field_border_focus": "#404040",
      "toolbar_field_separator": "#505050",
      "toolbar_field_text": "white",
      "toolbar_field_text_focus": "white",
      "toolbar_field_highlight": "white",
      "toolbar_field_highlight_text": "black"
    }
  }
}