Firstly i opened a Flash, i then made a shape, once i made this shape i clicked on the shape pressed CTRL & clicked on the shape to go down the drop down menu to convert to symbol, i then named the button & changed it's type to button, i then double clicked the shape to select it and pressed F6 to insert a timeline to the keyframe, now i can change the colour in the over state and you can do this in every state so the button changes in diffrent states.
