From my Charts I would say you have to much blue and to less red, so in theory apple until it changes and then pear until it changes if it is not black then another apple.

Instead of this you could try a pinapple.
But from what you said you are doing all of this already, another way would be going back to void blue then use a valfruit until currant purple and then use a pinapple for soot black

hope this helps