Have a basic variegated Ficus from Home Depot. Grew well and got root bound in the small pot it came with. After 2 years, decided to translplant into a 5 gallon pot with fast drain soil. Plant sits outside but in the shade and gets maybe 2 hours of direct sun per day. It seems to like the new potting but all new and abundant growth is green, not variegated. What did I do wrong?