You'd need to set the ForeColor property of the control. See http://www.outlookcode.net/article.aspx?ID=38

--
Sue Mosher, Outlook MVP
Author of Microsoft Outlook 2007 Programming:
Jumpstart for Power Users and Administrators
http://www.outlookcode.com/article.aspx?id=54


"willwong" wrote in message ...
Hi,

I was just wondering if this was possible? The idea is to mark the input in
red to highlight an invalid account number submission after it has been
validated

Thanks,

Will