Have you not looked at/for any of the QML documentation online?, there's plenty to look at, but sometimes, you will not always find directly what you want.

I have linked ScaleAnimator QML docs page, it gives a Rectangle and a nested ScaleAnimator, swap out Rectangle for Text and get busy playing/experimenting, then you can add a ColorAnimation on the same block of code, so now you can scale text and change its color.

Please, for yourself, do always look for documentation as most of it gives ready to paste examples to play with.

ScaleAnimator QML ~ https://doc.qt.io/qt-6/qml-qtquick-scaleanimator.html

ColorAnimation QML ~ https://doc.qt.io/qt-6/qml-qtquick-coloranimation.html

I'll even throw in a quick code chunk you can play with, but documentation is the way to go, mostly.

Text {
        id: scalingText
        text: "READ DOCS!"
        color: "green"
        anchors.centerIn: parent
        SequentialAnimation on scale {
            loops: Animation.Infinite
            running: true
            ScaleAnimator {
                from: 2
                to: 6
                duration: 1000
                easing.type: Easing.InOutQuad
            }
            ScaleAnimator {
                from: 6
                to: 2
                duration: 1000
                easing.type: Easing.InOutQuad
            }
        }
        SequentialAnimation on color {
            loops: Animation.Infinite
            running: true
            ColorAnimation {
                to: "red"
                duration: 4000
            }
            ColorAnimation {
                to: "green"
                duration: 4000
            }
        }
    }

Good luck, it's easy when you know how!

There's ColorAnimation to animate colors.

Although I haven't used these, I think you should check the QtQuick Animation example as a starting point.

Hope it helps