Change favicon in Node Red

Dashboard
6

Why not just use the template node?

[
    {
        "id": "5439e2fa04d0ab12",
        "type": "ui_template",
        "z": "ffc0171904d07147",
        "group": "40347547aa3cd9fd",
        "name": "favicon",
        "order": 1,
        "width": 0,
        "height": 0,
        "format": "<link rel=\"icon\" type=\"image/x-icon\" href=\"https://external-content.duckduckgo.com/ip3/nodered.org.ico\">",
        "storeOutMessages": true,
        "fwdInMessages": true,
        "resendOnRefresh": true,
        "templateScope": "global",
        "className": "",
        "x": 120,
        "y": 40,
        "wires": [
            []
        ]
    },
    {
        "id": "40347547aa3cd9fd",
        "type": "ui_group",
        "name": "Styles",
        "tab": "3e782fdfa1feb5fa",
        "order": 1,
        "disp": false,
        "width": "6",
        "collapse": false,
        "className": ""
    },
    {
        "id": "3e782fdfa1feb5fa",
        "type": "ui_tab",
        "name": "Styles",
        "icon": "dashboard",
        "order": 3,
        "disabled": false,
        "hidden": false
    }
]