How can I change the color of a button on clicked?

[Marianagb]

I saw a video where you need to create a ui.qml file for each rectangle and set a binding. I have 25 button is there an easier way to do this?

property alias rectangleColor: rectangle.color

[raven-worx]

@Marianagb
a vague answer for a very generic question:
Use a Component and a Repeater.