[Syd Thrift]

Would it though? The fact that the duplicates are already color-coded tells me that the server is already sending the "is this a duplicate?" data back to the UI, or else the UI is figuring this out on its own. In turn, all the UI would have to do instead of coloring the line-item red is to just hide it entirely. Granted, that would have the knock-on effect of seeing fewer items per page than what people would assume, but I think that's relatively minor.