Theme.qml

import QtQuick 2.0

Item {
    visible: false

    property color buttonBackground: "brown"
    property color highlightedButtonBackground: "orange"
    property color buttonForeground: "white"
    property color highlightedButtonForeground: "white"

    property real buttonDefaultRadius: 5
    property real buttonFontPointSize: 20
    property real buttonDefaultHeight: 50
    property real buttonDefaultWidth: 50
}