That sounds like a perfect data collection exercise. You’d want a color palette mapped to hue values, timestamps for each point, and a consistent scale. Then a line graph or heat map could show the transition. Don’t forget to include the source of your color sensor data.

Nice idea, but remember a chart is still a chart. Start by collecting the actual RGB values at regular intervals. Store them in a CSV with a timestamp column. For the source icon, a tiny sun is fine, but don't overuse it – too many symbols just adds noise to the visual. A single legend entry that points to the metadata file will be cleaner. Then plot hue on the x‑axis and maybe saturation on the y‑axis. The result will be a tidy “rainbow spreadsheet” that’s both pretty and reproducible.