results from:

This [[red]Word] has not the same color as this [[mark][color=red]Word]

This Word has not the same color as this Word

results from:

This [[blue]Word] has not the same color as this [[mark][color=blue]Word]

Reason: The short form is meant to highlight text like using a text marker. The standard colors are way to intense to do this. If you use the long form, you have all the 4 million colors and their standard names at your hand.

http://www.wikiservice.at/prowiki/wiki.cgi?CdmlColorNames

http://www.wikiservice.at/prowiki/wiki.cgi?HtmlColorCodes