How to create an Animated Button using Adobe Flash ?

The answer is in this tutorial :

I'am using Adobe Flash CS6, so if you are using another version don't worry because it doesn't matter.
So let's get started !!
First of all, open up Adobe Flash then, open a new project ( it doesn't matter AS 2.0 or 3.0 or else) .
Draw a circle using the Oval Tool and colorize it with the Paint Bucket Tool .

Select the circle using the Selection Tool and convert it to a Button Symbol :

Select the Buttons, right click and select Edit :

Then, insert a new keyframe in the timeline :

Select the circle again and convert it to a Movie Clip Symbol :

Select the created movie clip and click edit :

Insert two new Keyframes and change the color of the circle :

After editing the circle's colors go to the control menu and test the movie :

You can also watch the tutorial here :
 

This is a Simple Flash Test :

For more tutorials, stay tuned !