Examine source code of Yandex Dark

{
  "manifest_version": 2,
  "version": "2.0",
  "name": "Yandex Dark",
  "theme": {
    "colors": {
      "toolbar": "#4d4e57",
      "tab_line": "#4d4e57",
      "tab_text": "#fafafa",
      "bookmark_text": "#f5f5f5",
      "frame": "#2c2e38",
      "frame_inactive": "#353741",
      "tab_background_text": "#9a9ba0",
      "toolbar_field": "#5f5f68",
      "toolbar_field_text": "#ffffff",
      "toolbar_field_text_focus": "#ffffff",
      "toolbar_field_focus": "#2e2f38",
      "toolbar_field_border": "#5f5f68",
      "toolbar_field_border_focus": "#2e2f38",
      "toolbar_field_highlight": "#3390ff",
      "toolbar_field_highlight_text": "#ffffff",
      "toolbar_field_separator": "#4d4e57",
      "toolbar_text": "#f5f5f5",
      "toolbar_top_separator": "#4d4e57",
      "toolbar_bottom_separator": "#3d3e48",
      "toolbar_vertical_separator": "#4d4e57",
      "tab_background_separator": "#494b54",
      "popup": "#2e2f38",
      "popup_text": "#ffffff",
      "popup_border": "#373841",
      "popup_highlight": "#43444c",
      "popup_highlight_text": "#4cb0ff",
      "tab_loading": "#a6a7ab",
      "tab_selected": "#4d4e57",
      "sidebar": "#4b4c56",
      "sidebar_highlight": "#4177f4",
      "sidebar_highlight_text": "#ffffff",
      "sidebar_text": "#f5f5f5",
      "sidebar_border": "#373841",
      "button_background_active": "#7b7c83",
      "button_background_hover": "#6f6f77",
      "icons": "#ffffff",
      "icons_attention": "#e22d22",
      "ntp_background": "#44454f",
      "ntp_link": "#ffffff",
      "ntp_text": "#ffffff"
    }
  }
}