Apple Computer had an ad campaign which featured a multicolored
(rainbow, psychedelic) apple with a bite out of it. Underneath were
the words, "Think Different".

This is an example. This is probably not the *authentic* Apple ad:
http://www.3dnews.ru/documents/10358/04.jpg

1. What is the *original* and *authentic* font used for the text "Think Different"?

2. What are the *exact* colors (hex codes) used in the *original* and
*authentic* ad by Apple?

3. Where can I find an image (online) of the *original* and
*authentic* ad image of the apple and the text, "Think Different"?

"In cases when the Apple logo was accompanied by text, it was always
set in Apple Garamond. Aside from the company name, most of Apple's
advertising and marketing slogans such as "Think different." used the
font as well."

http://en.wikipedia.org/wiki/Apple_typography

This website chronicles the authors quest to make his own logo and he
matches colors using an old color book from photography class:

http://homepage.mac.com/jimyounkin/PhotoAlbum6.html

This site may be of help:

http://www.colorschemer.com/schemes/tags/rainbow