Symbolize layer color using RGB values

[SimonWillis]

I am looking to symbolize the color fill of a polygon feature class / shp using the RGB values (e.g. 54,54,234,0) in the attribute table.
I was surprised not to find this functionality in ArcGIS 10x by default.
So has anyone done this using python? Would I have to create a lyr file to make the colors stick? Would a style work? Other ideas?
Thanks!

[AndrewChapkowski]

You cannot change a symbol's color using RGB values at 10.1 or 10.0 using python.  What you could do is write a C/C++ function that calls ArcObject COM library and then use python's ctype module to call you DLL.

Andrew