Examine source code of Contrast

{
  "manifest_version": 2,
  "version": "0.1",
  "name": "Contrast",
  "theme": {
    "colors": {
      "bookmark_text": "white",
      "button_background_active": "darkturquoise",
      "icons": "white",
      "icons_attention": "darkturquoise",
      "frame": "black",
      "frame_inactive": "black",
      "ntp_background": "black",
      "ntp_text": "white",
      "popup": "black",
      "popup_border": "white",
      "popup_highlight": "darkturquoise",
      "popup_highlight_text": "white",
      "popup_text": "white",
      "sidebar": "black",
      "sidebar_border": "white",
      "sidebar_highlight": "darkturquoise",
      "sidebar_highlight_text": "white",
      "sidebar_text": "white",
      "tab_background_separator": "white",
      "tab_background_text": "white",
      "tab_line": "darkturquoise",
      "tab_loading": "darkturquoise",
      "tab_selected": "black",
      "tab_text": "white",
      "toolbar": "black",
      "toolbar_bottom_separator": "white",
      "toolbar_field": "black",
      "toolbar_field_border": "white",
      "toolbar_field_border_focus": "darkturquoise",
      "toolbar_field_focus": "black",
      "toolbar_field_highlight": "darkturquoise",
      "toolbar_field_highlight_text": "white",
      "toolbar_field_separator": "white",
      "toolbar_field_text": "white",
      "toolbar_field_text_focus": "white",
      "toolbar_text": "white",
      "toolbar_top_separator": "white",
      "toolbar_vertical_separator": "white"
    }
  }
}