Citation: Nogueira, Bernardo Albuquerque; Carvalho, Maria; Paix\~ao, Jos\'e Ant\'onio; Eus\'ebio, M. Ermelinda S.; Lopes, Susana M. M.; Pinho e Melo, Teresa M. V. D.; Fausto, Rui (2022). Portrayal of the Color Polymorphism in the 5-Acetyl-derivative of ROY. CrystEngComm, , pp. -.