Based off celestian's Death Indicator extension I have created a 4e version for Unity with the help of Valeros.
This extension applies a graphic to the PC and NPC tokens for 50%HP Bloodied, 0HP Unconscious, -1HP Dying, and on PC 0 - (Bloodied amount) for Dead.
There is roll over text telling the condition.
https://i.imgur.com/4fDW0qh.jpg
Download and add to the extensions folder