The present specification provides an agent for coloring keratinic fibers, wherein it contains (a) at least one compound of formula (I) and (b) at least one non-ionic surfactant. The present disclosure also provides a method of using such an agent as a coloring composition for human hair, wherein the method comprises application of the agent to the hair, an application time of from 5 to 45 minutes, and rinsing the agent from the hair.
