Comparing scarf colors at a library portrait event

Would a simple comparison station help visitors see how scarf colors affect a portrait? At an upcoming library portrait session, we hope to offer visitors a few scarves to try. I want the choice to feel playful, with no suggestion that one set of colors belongs to everyone. We could offer muted and vivid fabrics, while keeping the background and camera settings consistent for each person. What gives me pause is finding useful language that does not turn personal taste into a mistake. Could we start by asking where the eye goes in each photograph, leaving seasonal names until later? I have been reading about personal color analysis though practical experience with a community activity would be more useful than another rigid list of rules. What would you ask visitors after the comparison, and how would you keep the explanation brief and respectful?