Changes the color of enemy plate to the color of your choice (default Hunter class green) if it has Serpent Sting debuff AND you don't have aggro on it. Untick hide on aggro option if you want mob to be colored even when you have aggro. Make sure you're tracking Serpent Sting in Plater.
I didn't make the original. I just edited the mark of the crane nameplate color change weakaura https://wago.io/hv0fgw3PU