Which field type should you use to create a field that displays emails in color?

Using the formula text field type to create a field that displays emails in color is an effective choice because formula text fields allow for rich formatting and styling options, including applying different colors to the text. This field type enables you to create a formula that determines the appearance of the email displayed, allowing you to customize it based on specific criteria, such as the email address or certain conditions.

While the formula email field type is specifically designed for email addresses and ensures that valid email formats are maintained, it does not provide the same level of formatting freedom that a formula text field offers. The formula numeric field type is not applicable in this case as it is intended for numerical data and would not support email formatting or styling. Lastly, the standard email field is useful for inputting and storing email addresses but lacks the functionality for displaying them in colors or custom formats. Thus, the formula text field is the best option to achieve the desired visual customization for emails.