The iBook was introduced on July 21, 1999 in the colors tangerine (orange) and blueberry (light blue).
On 2/16/2000 a 366MHZ clocked model in Graphite (grey) was released.
On September 13, 2000, Apple launched model series with 366Mhz and 466Mhz with Firewire port in the colors Keylime (lime green), Indigo (dark blue) and Graphite (grey)