I'll ask this again to get back to rumors, but what the heck does the green fill color mean for the Save value? Does it mean anything at all?
Some people suggest it makes it "easier to read" but I disagree; it's not more legible than white on black. Why only the Save value? Why was no other stat colored? If you were to color a value green, the first instinct would be Health. Health is always green in games. From a purely visual aesthetic, it looks bad. None of the most common answers people have given make sense to me.
Either there is some hidden meaning we're not aware of yet, or it was a pointless, incohesive whim of graphic design. This is like my white whale of AoS 4th.