So when I go to clinic I always get a print out of my labs. Stuff that's out of range gets shaded a light grey color and stuff that's really out of range gets shaded a black color today I was actually looking at the key at the bottom of the page. This is what it said:
Light highlight = Abnormal
Dark highlight = Panic
In this setting everyone has dark highlights at some point or another and no one is panicking . They should probably change the wording on the key!