Another issue was that white polycarbonate tends to turn yellow ... which isn't something that could be said of the iMac G3 or iMac G4. All the components are hidden behind the display, which ...

The iMac G4 was influential in other ways. It dropped the bright, translucent plastics of the iMac G3 and ushered in a new era of white and silver — a look that persisted for years among Apple ...

the entire board is smaller than the stock iMac G4’s hard drive. It still took plenty of cramming, with a multitude of adapters finagled and massaged to fit inside the original housing.