Yes, it is normal during the ripening process where peppers turns to different colors. The green mature peppers turn to black before becoming yellow or red color.
Miniature bell peppers change from purple to orange as they mature.
Bell pepper plants with fruits ripening.
Green pepper becomes black before turning to red or yellow
Changing from black to red
Posted by: Dr. Ravishankar Narayana
Posted: March 24, 2017