Quote - ... Gold is 255, 215, 147 when viewed straight on. It changes in surprising ways as the viewing angle becomes more shallow.

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As far as i understand it, the 255,215,147 are the rgb values of something golden, when viewed straight on, normalized to R=255; but comparing with the e.g. wikipedia entry (Reflectivity), i noticed the  blue component being higher (147/255 = .58) than the nominal value (< 0.4), so i guess this is either for impure gold (e.g. with silver) or for some different (unknown) wavelengths. The green (215/255=0.84) is very close to an srgb-green of 550nm). Not that i know what the real value is or if anybody would ever build a chest of pure gold :-) How did you measure it?