Grey sell addon with Blacklist

[Lilyoptra]

Since blizz keeps making more grey items "useful", does anyone know of an autosell greys addon with a blacklist feature that will automatically sell all grey items when you open a vendor window EXCEPT for those you specifically blacklist. I currently use Leatrix but its all or nothing.

(And don't get me started on "why in the world" blizz would make greys useful; it invalidates the whole concept that we've been taught since vanilla, that grey items are "safe" to sell.)