Examine source code of XP Royale Noir

{
  "manifest_version": 2,
  "version": "2.0",
  "name": "V2",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-010-e9f94a3e61666a4c7677eb9cce17d854.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(33, 33, 34)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(17, 22, 28)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(63, 63, 64)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgba(0, 0, 0, 0.59)",
      "popup": "rgb(14, 16, 21)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_active": "rgb(46, 46, 47)",
      "button_background_hover": "rgba(39, 46, 66, 0.69)",
      "frame_inactive": "rgb(28, 28, 34)",
      "icons_attention": "rgb(255, 255, 255)",
      "icons": "rgb(238, 238, 238)",
      "ntp_background": "rgb(43, 43, 44)",
      "ntp_text": "rgb(255, 255, 255)",
      "popup_border": "rgba(6, 6, 6, 0.6)",
      "popup_highlight_text": "rgb(197, 197, 200)",
      "popup_highlight": "rgba(8, 8, 10, 0.48)",
      "tab_background_separator": "rgb(39, 39, 40)",
      "tab_loading": "rgb(255, 255, 255)",
      "tab_selected": "rgb(33, 42, 56)",
      "tab_text": "rgb(247, 248, 251)",
      "toolbar_bottom_separator": "rgb(8, 8, 8)",
      "toolbar_field_border_focus": "rgb(24, 24, 26)",
      "toolbar_field_border": "rgb(12, 13, 13)",
      "toolbar_field_focus": "rgba(31, 31, 32, 0.78)",
      "toolbar_field_highlight_text": "rgb(243, 243, 247)",
      "toolbar_field_highlight": "rgb(70, 86, 101)",
      "toolbar_field_separator": "rgb(14, 18, 18)",
      "toolbar_field_text_focus": "rgb(255, 255, 255)",
      "toolbar_top_separator": "rgb(17, 18, 23)",
      "toolbar_vertical_separator": "rgb(17, 18, 23)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{465a7bc4-3b3a-4cc8-af90-d6b1721719c3}"
    }
  }
}