Heh, the cartoonist knocks the Google logo but has probably never seen the earlier ones:

http://web.archive.org/web/19990224043535/www.google.com/stickers.html

Google created the earlier logo using GIMP, and even offered the original XCF file "if you want to hack on it"!

The page above also includes some early customizations for the Burning Man festival and for Thanksgiving.