Many prisons across Western countries recently began to paint detention cells in Baker-Miller pink to calm down aggressive inmates. This recent development is based on early findings of more than 30 years ago suggesting that Baker-Miller pink reduces physical strength and thus aggressive behavior. In the present study we question the applied methods of the original studies and run a highly standardized and controlled experiment to test the influence of Baker-Miller pink on aggressive behavior. The results do not replicate the original findings and thus challenge the recent adoption in many prisons. Implications and limitations of the experiment are discussed.