About the palettes...

Rainbow - Win
Grayscale - Win
Pastels - Win
Vivid - Win
NTSC - Win
Metallic - Win
These are versions of Director's built-in palettes, with the twenty standard Windows system colors substituted for the first ten and last ten entries in each.

Win Startup
This is the 256-color palette realized by Windows 95 at startup.

Indeo 3.2 Default
Indeo 4.1 Default
Indeo 4.1 Configurable
These are the palettes used by digital videos compressed with Intel's Indeo(r) codecs.

Cinepak
This is a palette obtained from a digital video compressed with the Cinepak(tm) codec.

Netscape
This is the 216-color palette used by Netscape Navigator, with the additional 40 entries set to near-black.  

MSN
This is the 256-color palette used by the Microsoft Network client.

Look for occasional updates to this cast on Macromedia's web site: http://www.macromedia.com