These are two seed grown Ficus virens, Lipstick fig. Each plant shows some variation in its leaves, bark, growth pattern etc. These characteristics can be influenced by the growth environment. In the case of these two plants the newly emerged leaves are red in color. This color changes to a deep green after a week or two.

Since the two trees are grown in identical soil, identical lighting and identical fertilization the variation in the red color is due to genetics. One consistently has darker red new leaves. I would love to find a clone that has red leaves that remain red! That would be a great addition to the bonsai community.