I've seen this listed elsewhere, but I can't find an enhancement request on it.
There should be a config or display option to display overridden dimensions in a separate color and possibly line width. It probably needs a mechanism to turn off that functionality when printing or saving to PDF.
Sure, Modelcheck is easily set up to identify these dimensions, but users will ignore it. If they have a bright green dimension that is double the standard line-width, they may pay a little more attention...or their boss might.