My G3 has the same colour plastics as my other "platinum" Macs, though the front bezel has been in direct sunlight and has yellowed a little.
The period of the G3 was when Apple basically gave up on the model numbering system, (6100, 7500, 8600 etc), hence when the B & W was introduced under the same "Power Macintosh G3" name, the term "Beige" was used to describe the non-B & W G3s. The term "Blue and White" (B&W) was also used for the same reasons.
I sort of wish that Apple would bring back the model numbering system as it made it far easier to identify the type of Mac and it's specs just by looking at the front bezel. It was more scientific than the current system of not really knowing the specs of a Mac until you start it up and check System Profiler.
The period of the G3 was when Apple basically gave up on the model numbering system, (6100, 7500, 8600 etc), hence when the B & W was introduced under the same "Power Macintosh G3" name, the term "Beige" was used to describe the non-B & W G3s. The term "Blue and White" (B&W) was also used for the same reasons.
I sort of wish that Apple would bring back the model numbering system as it made it far easier to identify the type of Mac and it's specs just by looking at the front bezel. It was more scientific than the current system of not really knowing the specs of a Mac until you start it up and check System Profiler.