material theme custom effect

[qunreallx]

I'm using qt 6.6 on windows and the problem is that I can't add a custom effect color on hover. I still have it standard, so I don't change it. Also when holding there is a wave effect, I would like to leave it but also change colors, how to achieve this??

I will be glad for any help or advice!

import QtQuick
import QtQuick.Controls
import QtQuick.Effects
import QtQuick.Controls.Material
import Qt5Compat.GraphicalEffects
import QtQuick.Controls.Material.impl
import QtQuick.Templates as T

ComboBox {
                id: owner_list
                Material.theme: Material.Blue

                anchors.centerIn: parent
                editable: true
                width: parent.width
                height: parent.height
                model: db.getAllCompanyNames()
                z: 5

                popup: T.Popup {
                    y: owner_list.height + 1
                    width: owner_list.width
                    height: Math.min(5 * 40 + verticalPadding * 2, owner_list.Window.height - topMargin - bottomMargin)
                    transformOrigin: Item.Top
                    topMargin: 12
                    bottomMargin: 12
                    verticalPadding: 8

                    Material.theme: owner_list.Material.theme


                    contentItem: ListView {
                        clip: true
                        implicitHeight: Math.min(5 * 40, model.count * 40)
                        model: owner_list.delegateModel
                        currentIndex: owner_list.highlightedIndex
                        // highlightMoveDuration: 0

                        delegate: Item {
                           width: parent.width
                           height: 40

                           Text {
                               anchors.centerIn: parent
                               text: modelData
                               color: "white"
                           }

                           MouseArea {
                               anchors.fill: parent
                               onClicked: {
                                   owner_list.currentIndex = index;
                                   owner_list.popup.close();
                               }
                           }
                       }


                        T.ScrollIndicator.vertical: ScrollIndicator { }
                    }

                    background: Rectangle {
                        radius: 4
                        color: "black"

                    }
                }
}