Now that you are a little bit more comfortable with the idea of dictionaries and variables, let's see how we can apply this knowledge to play with the colors picked by the user.
If this video is causing you issues, here is a copy on YouTube: https://youtu.be/QUeulgHm4ME (please, do not share)
Create some simple scripts where you would ask the user to pick a color (or another material if the command allows).
Have fun with multiple colors too. Don't worry: scripts won't bite. At the worst, it will just ignore you.
What will you code?
The forum thread is here.