Ok then, let me explain. It's very simple.
We have a button on the screen. If you click on the button the background color of the body will change.
I have implemented two ways to present it.
Simple mode in which by clicking the button the background color of the body will change accordingly to the previously given color values stored in a specific array.
Hex mode in which by clicking the button it will assign a random hex color to the background of the body.
