I had just updated fromString method to support three-digit notation and
pass the following test case, was thinking it might be useful to
someone, but again, can't quite say if this is something Cincom folks
need to integrate in their branch of Squeak-Extensions or something that
should go into Squeak's version, so don't jump on my case for
cross-posting please ;)

testColorFromString

 self assert: (ColorValue fromString: 'ff0000') = ColorValue red.
 self assert: (ColorValue fromString: 'FF0000') = ColorValue red.
 self assert: (ColorValue fromString: '#ff0000') = ColorValue red.
 self assert: (ColorValue fromString: '#FF0000') = ColorValue red.
 self assert: (ColorValue fromString: 'f00') = ColorValue red.
 self assert: (ColorValue fromString: 'F00') = ColorValue red.
 self assert: (ColorValue fromString: '#f00') = ColorValue red.
 self assert: (ColorValue fromString: '#F00') = ColorValue red.
 self assert: (ColorValue fromString: 'red') = ColorValue red.
 self assert: (ColorValue fromString: 'RED') = ColorValue red.
 self assert: (ColorValue fromString: '#red') = ColorValue red.
 self assert: (ColorValue fromString: '#RED') = ColorValue red.