Examine source code of N.E.T

{
  "manifest_version": 2,
  "version": "2.0",
  "name": "210625-2",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(45, 45, 45, 0.86)",
      "toolbar_text": "rgb(204, 204, 204)",
      "frame": "rgb(85, 85, 85)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(100, 100, 100, 0.52)",
      "toolbar_field_text": "rgb(225, 225, 225)",
      "tab_line": "rgba(229, 124, 24, 0.57)",
      "popup": "rgb(100, 100, 100)",
      "popup_text": "rgb(206, 206, 206)",
      "button_background_active": "rgba(150, 150, 150, 0.32)",
      "button_background_hover": "rgba(255, 124, 0, 0.47)",
      "icons_attention": "rgb(229, 124, 24)",
      "ntp_text": "rgba(225, 225, 225, 0.85)",
      "popup_border": "rgba(225, 225, 225, 0)",
      "popup_highlight": "rgba(229, 124, 24, 0.72)",
      "sidebar_border": "rgba(225, 225, 225, 0)",
      "sidebar_highlight_text": "rgb(255, 255, 255)",
      "sidebar_highlight": "rgba(229, 124, 24, 0.62)",
      "sidebar_text": "rgb(0, 0, 0)",
      "sidebar": "rgb(132, 132, 132)",
      "tab_loading": "rgba(229, 124, 24, 0.87)",
      "tab_selected": "rgba(73, 149, 71, 0.21)",
      "tab_text": "rgb(208, 208, 208)",
      "toolbar_bottom_separator": "rgb(45, 45, 45)",
      "toolbar_field_border_focus": "rgba(162, 85, 225, 0)",
      "toolbar_field_border": "rgb(192, 108, 28)",
      "toolbar_field_focus": "rgb(48, 48, 48)",
      "toolbar_field_highlight_text": "rgb(255, 255, 255)",
      "toolbar_field_highlight": "rgba(229, 124, 24, 0.87)",
      "toolbar_field_text_focus": "rgb(255, 255, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1a7fdd48-1581-4c0e-a9ee-dcf6d52eb2c0}"
    }
  }
}