Black is just how humans perceive the absence of any significant peaks in the spectrum of reflected light.
The alchemist knows that where there is lead, where there are challenges, there is blackness, there is also gold.
We are all of us alchemists. We activate our ability to release the spirit of the lead when we know that everything in life happens for us not to us. When we turn the eye inwards, when we observe our lives from the perspective of spirit we reveal the spectrum of golden light that is hidden to the human eye. Light that opens up new pathways for us to follow.