Implement the eyes function to recreate the following graphic.

The circle

Since the graphic is mainly composed by circles, to avoid putting the same width and height in the ellipse function each time, let's create a circle function that only takes a diameter and a color.

An eye

Since we are going to need two eyes, let's implement an eye function to avoid having to write the same code twice. The pupil's diameter should be half of the eye's diameter.

Two Eyes

You can now implement the eyes function that returns two eyes beside eachother.