Hello Survey123 team,
When you’re using a “Mandatory” field, or a special formatted field (like Email), the survey highlights missing or bad formed answers in a red/pink shade. Can you change the color of this text and highlighting? I don't see any options from Connect or Web Designer, wondering if there is something I can add to the .info file.
Unfortunately this is not currently possible via Survey123 Connect or web designer, we do not have an option or setting to change the default colour used for required or constraint error messages.
If this is important to you and your project, I encourage you to submit an enhancement request via Esri Support. Our Support team will assign an official enhancement number for your records. Similar requests from other customers can then be attached to the same enhancement request, which helps us assess demand for the enhancement and prioritize it accordingly.