When a file is marked CVS > Ignore in the file tree, it is rendered as gray text as opposed to black text for normal files.  This is nice.  

When an ignored file node is *selected*, the background color is blue, and the text color is white.  Since this is the exact same coloring for selected normal 
files, you lose the visual indication that the file is different (i.e. ignored).  This is most disturbing when you select a file and mark it as ignored... until you click 
away on another node, it looks the same.  You initially might think the command didn't work.

I think either the foreground or background should be gray when ignored nodes are selected in the tree, so it is still apparent that they are ignored.