Most Macs up to and including the PowerMac G3 are referred to generically as 'beige'. In fact, the original beige was replaced by platinum partway through the lifetimes of the 512Ke, Plus, IIci and probably other models contemporary with those three. The same change was reflected in the Apple IIe Platinum. Whether or not the base formulation of the ABS plastic remained the same, the difference reportedly lay in the addition of a blue dye to mask the yellowing (somewhat).
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