There are a few reasons why your Soft Touch holly may begin to change colors. Typically, when discoloration occurs, it is a sign of an issue with your plant. One of the most common causes of foliage discoloration is chlorosis. However, lack of sunlight and improper watering can also cause the leaves of the Soft Touch holly to turn brown. Any time you see the leaves of this plant change colors, you should be ready to intervene and restore its health.