A year after Health and Human Services Secretary Robert F. Kennedy Jr. encouraged food companies to voluntarily phase out their use of synthetic dyes, little action has been taken.

According to Consumer Reports, promises by major companies like Coca-Cola, Mondelez, and Unilever haven’t materialized. The non-profit group has supported state legislation in states like New York, which approved a bill this week requiring food companies to make public information about food chemicals including dyes.