Clicking on NPCs causes their name in the tooltip to turn white for a fraction of a second or so. Taking the mouse off an NPC also causes their name to turn white as the tooltip fades away.
The same applies for player tooltips who are flagged for PVP.
Clicking on NPCs causes their name in the tooltip to turn white for a fraction of a second or so. Taking the mouse off an NPC also causes their name to turn white as the tooltip fades away.
The same applies for player tooltips who are flagged for PVP.