Data for: Online visual screening of glass-jar instant coffee packaging: consumer perception, colour cues and expert-informed priorities

This dataset supports the manuscript "Online visual screening of glass-jar instant coffee packaging: consumer perception, colour cues and expert-informed priorities". The deposited workbook provides de-identified respondent-level semantic and colour rating matrices, aggregate sample summaries, measurement diagnostics, complete-package omnibus diagnostics, controlled-colour omnibus and mean/95% confidence interval results, forced-choice summaries, AHP aggregate priorities, anonymized AHP raw pairwise matrix values, individual and group AHP consistency diagnostics, sensitivity diagnostics and provenance records. The consumer questionnaire was administered online in China from 11 to 14 February 2026 and the preserved consumer dataset contains 503 adult responses. A separate AHP assessment used responses from 20 experts. The respondent-level matrices use pseudonymous research IDs and do not include IP addresses, exact timestamps, demographic microdata or direct identifiers. Commercial packaging images are not redistributed publicly because of brand-image and copyright restrictions; non-branded stimulus descriptions and de-identified schematic documentation are provided in the workbook.