As adviced, I share what i created. Little drama 
and Hello World of GameDev.
That’s awesome! How did you add color?
In your Project Window click Righ Mouse Button then 'Create" and "Material.
This will create you a little ball in your assets (you can name it then). Next click on that ball ,and thenin Inpector Window find Albedo option. Here you change color of the material. When you do this you can simply drag Material over the object in Scene or in Hierarchy.
Thanks!
Thats really very cool