Novell ZENworks 10 Configuration Management
If a bundle has requirements that fail (such as file or registry key existence) and it is set with "Show application icon if system requirements fail" checked, then when conditions change to make the test pass, and NAL is refreshed, the icon remains grey until the user logs in again (or in the case of the NAL window, until the window is closed and restarted). The same is true in reverse: an icon that first appears in color will not change to grey if the conditions change to being unmet.
This is fixed in version 10.1 - see KB 7001200 "ZENworks 10 Configuration Management with SP1 (10.1)" which can be found at https://www.novell.com/support
Checking the properties of the icon, "System Requirements" tab, will show you the correct status.