Onmouseover change another movieclip color

guys, i apologize for my long abscence (new baby etc)…

please let me know how to do this.:

when i move my mouse over over a button, i would like the movieclip to change its color to another one.

Basically this is a project for a map.

I have a country with 78 districts, when i move my mouse over the district name i would like the corresponding distric shape within the bigger map to be highlighed in the color I specified.

\Please help, i understand it shoudl be easy , but my googling skills are not good enough.
thanks