When out of ocmbat, nameplates has a reduced size.
It's configurable.
If friendly nameplate are enabled, this is how Plater show plates for friendly players.
When in combat, plates has normal size (also configurable).
As DPS the red bar means the mob has aggro on you.
If you are a tank, would be opposite: red nameplate = no aggro.AS DPS the purple color means the mob isn't attacking you.<...
