How colour works on a shelf and on a product: category conventions, what research does and does not show about colour and expectation, finishes, the gap between the digital pack and the printed one, and how colour and decoration choices affect whether packaging can be sorted and recycled.
Controlled research findings are separated from marketing folklore. Recycling is covered as the physical interaction between colour and sorting, not as regulatory guidance.
14 topics · 55 evidence-labelled claims · 40 sources
Category codes, flavour cues and premium signals.
Substrates, finishes and matching.
Clear versus coloured packs, black plastic, sleeves, inks and coatings.