title: Customize or Define new Qml ChartView theme
body: <p>There's an official sample code that customize background and plot area brushes of QChart: <a href="https://doc.qt.io/qt-5/qtcharts-customchart-example.html" rel="nofollow noreferrer">Custom chart example</a></p>
  
  <p><a href="https://i.stack.imgur.com/nD8sh.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/nD8sh.png" alt="enter image description here"></a></p>
  
  <p>How can I acheive this in Qml way with ChartView(Qml type)?</p>
  
  <p>I want to customize Qml ChartView like that sample. but there's no direct way(qml property) to change brushes from qml. also ChartView.ChartTheme property are predefined and hardcoded in C++. I don't know if its possible and how to inherit QChart to change those properties from C++ and define custom QML Type.</p>