Multiple Fill & Stroke

Open your “Appearance” window, you can see this image below has red fill and 5pt blue stroke.

You can apply multiple fill and stroke from option menu of the appearance window.

Now the image below has blue stroke and white dashed line in one object.

In exact same manner, you can add another fill to the same object.

You can pick/change the fill/stroke from pull down menu of the Appearance window.