Examine source code of Opera Light

{
  "manifest_version": 2,
  "version": "4.0",
  "name": "Opera Light",
  "theme": {
    "colors": {
      "toolbar": "#ffffff",
      "tab_line": "#ffffff",
      "tab_text": "#171b1f",
      "bookmark_text": "#444748",
      "frame": "#e3ebf2",
      "frame_inactive": "#e3ebf2",
      "tab_background_text": "#6d7f8f",
      "toolbar_field": "#ffffff",
      "toolbar_field_text": "#000000",
      "toolbar_field_text_focus": "#000000",
      "toolbar_field_focus": "#ffffff",
      "toolbar_field_border": "#ffffff",
      "toolbar_field_border_focus": "#80ccff",
      "toolbar_field_highlight": "#0199ff",
      "toolbar_field_highlight_text": "#ffffff",
      "toolbar_field_separator": "#d1d1d1",
      "toolbar_text": "#444748",
      "toolbar_top_separator": "#ffffff",
      "toolbar_bottom_separator": "#b4c1cc",
      "toolbar_vertical_separator": "#ffffff",
      "tab_background_separator": "#b1b8bd",
      "popup": "#ffffff",
      "popup_text": "#121314",
      "popup_border": "#d8e2eb",
      "popup_highlight": "#0199ff",
      "popup_highlight_text": "#ffffff",
      "tab_loading": "#b6b7b7",
      "tab_selected": "#ffffff",
      "sidebar": "#ffffff",
      "sidebar_highlight": "#ebf5fb",
      "sidebar_highlight_text": "#000000",
      "sidebar_text": "#121314",
      "sidebar_border": "#b8bfc4",
      "button_background_active": "#cdcdcd",
      "button_background_hover": "#e6e6e6",
      "icons": "#444748",
      "icons_attention": "#db4444",
      "ntp_background": "#f5f7f8",
      "ntp_link": "#000000",
      "ntp_text": "#000000"
    }
  }
}