Robertsanswered grow question 4 years ago If you are referring to the new growth, leaves don't turn green till exposed to light. The chlorophyll starts going to produce energy. Your baby looks very good. Don't get heavy on nitrogen. The leaves will let you know how much is in plant by shade of green. You got a good color going now. If you are referring to another part I can't see well in picture.
You light should be about 2 foot away or 24 inches. Good luck and happy growing. 🌲🌲🌲👊