Inventive Principle #32: Color Changes
Change the color of a product, object, or surroundings. Change the transparency of an object or system. Change emissive properties subject to radiation.
Examples of the Use of This Principle:
1. Use color to indicate degree of hazard in traffic, chemical systems, pH paper
2. Color sensitive labeling (e.g., food spoilage temperature)
3. “Six Thinking Hats® process to control structure of idea generation
4. Highlighters
5. Electrochromic glass
6. Fluorescent additives
7. Parabolic receptors
8. Photolithography
9. Camouflage
10. Safe lights in photographic darkrooms
Where have you seen this principle used?