Disabled items in the Silver style list box control are not grayed out as they are in the System or LV list box controls. Really frustrates the users when they try to select "disabled" items. Can you tell that the below "LO Output Power" item is disabled?
Playing with properties of the control, I was able to get the "normal" behaviour by setting the cell font color to 0 and the cell background color to 0xFFFFFF. Any disabled row with these property settings will "gray out" as seen below. This is what it should look like without having to play with properties.
This was passed to R&D and determined to be unexpected behaviour. CAR# 314062 was assigned to this issue.