@MrMeszaros you can style it anyway you want to. just add wrapper and style it to your liking:

section.delegate: Rectangle{ width: parent.width height: childrenRect.height color: "red" required property string section Text { anchors.horizontalCenter: parent.horizontalCenter text: parent.section font.bold: true color: "blue" font.pointSize: 13 } }

Solved it by adding the line

qputenv("QT_STYLE_OVERRIDE","Material");

in main.cpp

I saw terrain rendering in this old video, but I couldn't find the code to it:
https://www.youtube.com/watch?v=bYgSxoXgSU8
Maybe you have more luck.