Change colors and SharedObject

Hi all,
I have a quite difficult problem (well, for me it is). I mean, that I’ve got an attached mc from the library and it’s duplicated with xml. Mc has a function of an button (getUrl). I need Mc to change a color when “rollOver” and “rollOut” and then when “on release” to change a color forever by using a SharedObject. For example there are about 60 of these mcs and only the one, which will be clicked, has to change the color.
Could someone please help to make a small sample for me? I would really appreciate it. :}