Fig. 3 – Collection of normalized reflected intensities from a 45nm Au film measured in the red, green and blue camera channels for a rainbow of 50 illuminating colors. The colors of the lines correspond to the illuminations. Black solid lines are an aid to the eye showing shifts in the dip of the reflectance. (b) Idem to (a) for a 45nm Ag film. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of the article.)