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The gold is a dealer installed option, it was popular in the 90s and early 2ks. Thee is a process where the gold is put on with the trim still on the car, hydrolysis or some damn thing.
A friend of mine had a Lexus with the gold lettering. My understanding is that the car needed to be hand washed, and his Lexus dealer would wash it for free any time he wanted. It was purely for looks.