Creating user choice with states

Ok, here we go!  I want to create an action when a user selects a color(let's say it's a rectangle colored red) and then is able to color another object(circle) with that particular color.    I have two colors that I would like to use and 8 circles for users to color.  I have achieved this with a click(red) and double click(black) action but thought it might be cleaner if the user can choose a color first and then fill the shape by clicking it.  I am creating a fraction elearning program the problem is below:

Melissa made 5/8 strawberry pies and 3/8  blackberry pies.....

So, I want students to visualize the strawberry and blackberry pies by coloring the circles with the corresponding color.  Thanking for responses in advance!