The first Apple logo was designed by
Screenshot/YouTube
Then, a massive change. The iconic "rainbow apple" was supposedly designed to reflect Apple's tagline at the time ("Byte into an Apple").
Screenshot/YouTube
Since then the logo has endured small modifications, taking on a stark black look in 1998, followed by 3D versions and finally, bringing us to the white or chrome versions we see now.
Here's a short video that takes you through the logo's evolution. We first saw the clip when HuffPost Tech tweeted it this morning.