The Apple Rainbow logo was designed in 1977 by graphic designer Rob Janoff. The classic bitten apple logo was introduced together with the brand's first personal computer, the Apple II. The rainbow color scheme was a nod towards the Apple II which was the world's first to feature a color display.
For the native Maxon C4D file's material, I used a rainbow gradient to match the color placement and wrap around the apple. I actually made this logo for my PowerPC 6100 model.