Hmm...That Knife...
I think...White Or Pink and Black.
Reason:Black Had White Top Hat Before He Die...
BUT.There are Two Top Hats.
And Look Crew.Purple Has Sharp Teeth Like Black.
So Black isnt Die.
And,Check Knife Closer in This Episode.Um.
I Mean:Murderer is
Pink/Black
or White/Black.
I Hope This Answer is True.