postscript in Graphics: a question to learn more about preamble/postscript

Hi all,
while having a look at existing postscripts I found that package
Graphics contains
       Color initializeNames
and noticed that Color>>initialize has it too
Color>>initialize
        "[...snip...]"
        self initializeIndexedColors.
        self initializeGrayToIndexMap.
        self initializeNames.
        self initializeHighLights.

Is there any reason for this postscript?
--
Enrico Spinielli
"Do Androids dream of electric sheep?"— Philip K. Dick
"Hear and forget; see and remember;do and understand."—Mitchel Resnick

On Sun, 9 Jan 2011, Enrico Spinielli wrote:
Postscripts and preambles are used to execute code after or before loading
a package without changing a method in the package. We use them in the
Trunk's update process, so the postscripts and preambles of Trunk
packages are not related to the package itself in the Trunk, but are used
for migration from one version to another.

In this case I used a postscript to reinitialize ColorNames, because
I changed it's representation (from OrderedCollection to Set).


Levente

> --
> Enrico Spinielli
> "Do Androids dream of electric sheep?"˙˙ Philip K. Dick
> "Hear and forget; see and remember;do and understand."˙˙Mitchel Resnick
>
>