Leaves become mottled with white or yellow mosaic that resembles variegation. Cultivars emphasize different patterns of variegation. This is known as position-effect variegation and can lead to a mosaic phenotype. Constitutive heterochromatin can affect the genes near itself (e.g. position-effect variegation). A popular houseplant, numerous cultivars have been developed, some of which show leaf variegation. Transposable elements can cause colour variegation. Only for homozygous "mus"209, the variegation was significantly suppressed. The legs exhibit variegation of yellow and are covered with grey hairs. Cuttings with complete variegation may be difficult if not impossible to propagate. The specific epithet "pictus" means "painted", referring to the variegation on the leaves. Otherwise, even with heavy variegation, the plant is very robust. The variegation may change with the seasons and as the plant ages. It is sometimes called blister variegation. The other model is the variegation model. The first method has the disadvantage that the variegation will be lost.