Show all of added files as green (added) better

There is a use case where an author uploads a file added to source control to a review, so that it shows it as all added code and it is not compared against a previous version because it is new. Then the author makes a change to the file, and reuploads. Collaborator now compares the two versions and shows only one line changing. This happens despite the "Diff Viewer Default Version Comparison". It is easy for a reviewer to not realize that the whole file is new in this use case. It would be good to at least have the option to show the whole file as new so that this confusion can be avoided.