I am not as familiar with ImageViewer as I would like but to me it sounds like the cssClass off the Image objects has an opacity set on it by default. If you make a style that doesn't have this setting on it, you would probably be able to get the effect your are looking for.
The SamplesBrowser has two samples you should look at, the first would be (link)
http://samples.infragistics.com/2008.2/webfeaturebrowser/contents.aspx?showCode=True&t=webimageviewer/ImageViewerAdjustNavigationMode.aspx~srcview.aspx?path=~srcview.aspx?path=webimageviewer/ImageViewerAdjustNavigationMode.src
As this looks like the behavior you are describing
the other is (link)
http://samples.infragistics.com/2008.2/webfeaturebrowser/contents.aspx?showCode=True&t=webimageviewer/ImageViewerSelectingItems.aspx~srcview.aspx?path=~srcview.aspx?path=webimageviewer/ImageViewerSelectingItems.src
Which has a new style defined for the Item.cssClass which seems to prevent the greying feature.
If you click on the tabs as the very top of the sample you can view the code ASPX and CS
Darrell Kress
Research and Development
Infragistics
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