A temporal change of spectral reflectance for three new soft lining materials was discussed. These materials, Polyolefin, Silicone resilient materials and Polyphosphazine fluoroelastomer were immersed in four aqueous solutions and one oleaginous solution. A remarkable change was observed in the Polyolefin immersed in olive oil plus β-Carotene, and also in Silicone in turmeric and instant coffee. Polyphosphazine fluoroelastomer in turmeric and in instant coffee also caused a noticeable temporal change of spectral reflectance. These results suggested that the use of spectral reflectance was very useful for comparing with before and after evaluation for color change.
