Hi Will. Thank for your respon. I will check the pH later and if the plantlets big enough will try to separate them into individual pot with new soil.
But i am not sure if it is becuse of the soil or pH. Its already light green since i bought it. And I repot it to bigger pot using the same mix of soil and compost to other pot of peace lily which have dark green leaves.
Let see if they stay in that color after i separate them. I love to collect peace lily in different color ad different varegata form. I will take photograph to compare them