I and just about everyone else calls them Beige G3, cause everyone knows them by that name.
if you go to Apples forum they have a section called Power Macintosh G3 (Platinum-Beige) , if you dont like that we are calling them Beige G3 you better get on Apple as well. cause it is what people calls them, as a test type in Beige G3 into google and then do the same with Platinum G3 you will see what i mean.