SSE Oblivion crown marker for immortal NPC's?

[sgreenwald8742]

In oblivion all unkillable NPC's had the aim icon change to a crown when aiming at them so you don't beak stealth or commit a crime trying to kill an unkillable NPC.

Does something like this exist for skyrim?

It's really annoying when your playing a criminal character. "If I kill this one character I can steal everything, oh he's immortal, now I have a huge bounty, he's still watching me, and here come the guards"