YaST2 install/remove software -- package name and summary display in red rather than black. Why?

Hi, everyone. In the YaST install/remove software setup screen some packages on my SuSE 9.3 pooter display the package name and summary in red rather than black. For example: Clamav, Open Office, permissions, amarok, etc.. What does it mean when the package is displayed in red? Is this a warning that I need to heed? Clicking on "help" in YaST2 does not provide the answer. Thanks!! :o) Gil