This read-only TruthValue indicates whether color marking (marking traffic green, yellow, or red based on conformance to CIR/EIR) is active on a version-2 QoS policer. An administrator reads it to understand whether downstream queuing and dropping decisions for this policer's traffic rely on color markings or are being made some other way. For example, if this reports false on a policer expected to support tiered dropping, that would explain why yellow-marked excess traffic isn't being treated differently from green traffic downstream.