Water, Air and Soil Pollution, 216(1), 693-702 Muller, W., Loh, M., Vardoulakis, S., Johnston, H.J., Steinle, S., Precha, N., Kliengchuay, W., Tantrakarnapa, K
These guidelines prohibited a picture from lowering the moral standards of those who see it, and forbade it from creating sympathy for the violation of law. In practical terms, the Code forbade nudity, violence, depictions of sexual perversion (including homosexuality), certain curse words, illicit drug use, representation of crime without punishment, and blasphemy against religion or religious figures
1 2 3 "Unpacking resistance and support: a global systematic review of barriers and facilitators to tobacco standardised packaging"
It helps if the color of the surface contrasts with your tobacco so that the tobacco doesn't blend in