yuzu-mainline/dist/qt_themes/default/style.qss

QPushButton#TogglableStatusBarButton {
    color: #959595;
    border: 1px solid transparent;
    background-color: transparent;
    padding: 0px 3px 0px 3px;
    text-align: center;
}

QPushButton#TogglableStatusBarButton:checked {
    color: #000000;
}

QPushButton#TogglableStatusBarButton:hover {
    border: 1px solid #76797C;
}

QPushButton#RendererStatusBarButton {
    color: #656565;
    border: 1px solid transparent;
    background-color: transparent;
    padding: 0px 3px 0px 3px;
    text-align: center;
}

QPushButton#RendererStatusBarButton:hover {
    border: 1px solid #76797C;
}

QPushButton#RendererStatusBarButton:checked {
    color: #e85c00;
}

QPushButton#RendererStatusBarButton:!checked {
    color: #0066ff;
}

QPushButton#buttonRefreshDevices {
    min-width: 20px;
    min-height: 20px;
    max-width: 20px;
    max-height: 20px;
}

QWidget#bottomPerGameInput,
QWidget#topControllerApplet,
QWidget#bottomControllerApplet,
QGroupBox#groupPlayer1Connected:checked,
QGroupBox#groupPlayer2Connected:checked,
QGroupBox#groupPlayer3Connected:checked,
QGroupBox#groupPlayer4Connected:checked,
QGroupBox#groupPlayer5Connected:checked,
QGroupBox#groupPlayer6Connected:checked,
QGroupBox#groupPlayer7Connected:checked,
QGroupBox#groupPlayer8Connected:checked {
    background-color: #f5f5f5;
}

QWidget#topControllerApplet {
    border-bottom: 1px solid #828790
}

QWidget#bottomPerGameInput,
QWidget#bottomControllerApplet {
    border-top: 1px solid #828790
}

QWidget#topPerGameInput,
QWidget#middleControllerApplet {
    background-color: #fff;
}

QWidget#topPerGameInput QComboBox,
QWidget#middleControllerApplet QComboBox {
    width: 123px;
}

QWidget#connectedControllers {
    background: transparent;
}

QWidget#playersSupported,
QWidget#controllersSupported,
QWidget#controllerSupported1,
QWidget#controllerSupported2,
QWidget#controllerSupported3,
QWidget#controllerSupported4,
QWidget#controllerSupported5,
QWidget#controllerSupported6 {
    border: none;
    background: transparent;
}

QGroupBox#groupPlayer1Connected,
QGroupBox#groupPlayer2Connected,
QGroupBox#groupPlayer3Connected,
QGroupBox#groupPlayer4Connected,
QGroupBox#groupPlayer5Connected,
QGroupBox#groupPlayer6Connected,
QGroupBox#groupPlayer7Connected,
QGroupBox#groupPlayer8Connected {
    border: 1px solid #828790;
    border-radius: 3px;
    padding: 0px;
    min-height: 98px;
    max-height: 98px;
}

QGroupBox#groupPlayer1Connected:unchecked,
QGroupBox#groupPlayer2Connected:unchecked,
QGroupBox#groupPlayer3Connected:unchecked,
QGroupBox#groupPlayer4Connected:unchecked,
QGroupBox#groupPlayer5Connected:unchecked,
QGroupBox#groupPlayer6Connected:unchecked,
QGroupBox#groupPlayer7Connected:unchecked,
QGroupBox#groupPlayer8Connected:unchecked {
    border: 1px solid #d9d9d9;
}

QGroupBox#groupPlayer1Connected::title,
QGroupBox#groupPlayer2Connected::title,
QGroupBox#groupPlayer3Connected::title,
QGroupBox#groupPlayer4Connected::title,
QGroupBox#groupPlayer5Connected::title,
QGroupBox#groupPlayer6Connected::title,
QGroupBox#groupPlayer7Connected::title,
QGroupBox#groupPlayer8Connected::title {
    subcontrol-origin: margin;
    subcontrol-position: top left;
    padding-left: 0px;
    padding-right: 0px;
    padding-top: 1px;
    margin-left: 0px;
    margin-right: -4px;
    margin-bottom: 4px;
}

QCheckBox#checkboxPlayer1Connected,
QCheckBox#checkboxPlayer2Connected,
QCheckBox#checkboxPlayer3Connected,
QCheckBox#checkboxPlayer4Connected,
QCheckBox#checkboxPlayer5Connected,
QCheckBox#checkboxPlayer6Connected,
QCheckBox#checkboxPlayer7Connected,
QCheckBox#checkboxPlayer8Connected {
    spacing: 0px;
}

QWidget#Player1LEDs QCheckBox,
QWidget#Player2LEDs QCheckBox,
QWidget#Player3LEDs QCheckBox,
QWidget#Player4LEDs QCheckBox,
QWidget#Player5LEDs QCheckBox,
QWidget#Player6LEDs QCheckBox,
QWidget#Player7LEDs QCheckBox,
QWidget#Player8LEDs QCheckBox {
    spacing: 0px;
}

QWidget#Player1LEDs QCheckBox::indicator,
QWidget#Player2LEDs QCheckBox::indicator,
QWidget#Player3LEDs QCheckBox::indicator,
QWidget#Player4LEDs QCheckBox::indicator,
QWidget#Player5LEDs QCheckBox::indicator,
QWidget#Player6LEDs QCheckBox::indicator,
QWidget#Player7LEDs QCheckBox::indicator,
QWidget#Player8LEDs QCheckBox::indicator {
    width: 6px;
    height: 6px;
    margin-left: 0px;
}

QWidget#bottomPerGameInput QCheckBox#checkboxPlayer1Connected::indicator,
QWidget#bottomPerGameInput QCheckBox#checkboxPlayer2Connected::indicator,
QWidget#bottomPerGameInput QCheckBox#checkboxPlayer3Connected::indicator,
QWidget#bottomPerGameInput QCheckBox#checkboxPlayer4Connected::indicator,
QWidget#bottomPerGameInput QCheckBox#checkboxPlayer5Connected::indicator,
QWidget#bottomPerGameInput QCheckBox#checkboxPlayer6Connected::indicator,
QWidget#bottomPerGameInput QCheckBox#checkboxPlayer7Connected::indicator,
QWidget#bottomPerGameInput QCheckBox#checkboxPlayer8Connected::indicator {
    width: 12px;
    height: 12px;
}

QCheckBox#checkboxPlayer1Connected::indicator,
QCheckBox#checkboxPlayer2Connected::indicator,
QCheckBox#checkboxPlayer3Connected::indicator,
QCheckBox#checkboxPlayer4Connected::indicator,
QCheckBox#checkboxPlayer5Connected::indicator,
QCheckBox#checkboxPlayer6Connected::indicator,
QCheckBox#checkboxPlayer7Connected::indicator,
QCheckBox#checkboxPlayer8Connected::indicator {
    width: 14px;
    height: 14px;
}

QGroupBox#groupPlayer1Connected::indicator,
QGroupBox#groupPlayer2Connected::indicator,
QGroupBox#groupPlayer3Connected::indicator,
QGroupBox#groupPlayer4Connected::indicator,
QGroupBox#groupPlayer5Connected::indicator,
QGroupBox#groupPlayer6Connected::indicator,
QGroupBox#groupPlayer7Connected::indicator,
QGroupBox#groupPlayer8Connected::indicator {
    width: 16px;
    height: 16px;
}

QWidget#Player1LEDs QCheckBox::indicator:checked,
QWidget#Player2LEDs QCheckBox::indicator:checked,
QWidget#Player3LEDs QCheckBox::indicator:checked,
QWidget#Player4LEDs QCheckBox::indicator:checked,
QWidget#Player5LEDs QCheckBox::indicator:checked,
QWidget#Player6LEDs QCheckBox::indicator:checked,
QWidget#Player7LEDs QCheckBox::indicator:checked,
QWidget#Player8LEDs QCheckBox::indicator:checked,
QGroupBox#groupPlayer1Connected::indicator:checked,
QGroupBox#groupPlayer2Connected::indicator:checked,
QGroupBox#groupPlayer3Connected::indicator:checked,
QGroupBox#groupPlayer4Connected::indicator:checked,
QGroupBox#groupPlayer5Connected::indicator:checked,
QGroupBox#groupPlayer6Connected::indicator:checked,
QGroupBox#groupPlayer7Connected::indicator:checked,
QGroupBox#groupPlayer8Connected::indicator:checked,
QCheckBox#checkboxPlayer1Connected::indicator:checked,
QCheckBox#checkboxPlayer2Connected::indicator:checked,
QCheckBox#checkboxPlayer3Connected::indicator:checked,
QCheckBox#checkboxPlayer4Connected::indicator:checked,
QCheckBox#checkboxPlayer5Connected::indicator:checked,
QCheckBox#checkboxPlayer6Connected::indicator:checked,
QCheckBox#checkboxPlayer7Connected::indicator:checked,
QCheckBox#checkboxPlayer8Connected::indicator:checked,
QGroupBox#groupConnectedController::indicator:checked {
    border-radius: 2px;
    border: 1px solid #929192;
    background: #39ff14;
    image: none;
}

QWidget#Player1LEDs QCheckBox::indicator:unchecked,
QWidget#Player2LEDs QCheckBox::indicator:unchecked,
QWidget#Player3LEDs QCheckBox::indicator:unchecked,
QWidget#Player4LEDs QCheckBox::indicator:unchecked,
QWidget#Player5LEDs QCheckBox::indicator:unchecked,
QWidget#Player6LEDs QCheckBox::indicator:unchecked,
QWidget#Player7LEDs QCheckBox::indicator:unchecked,
QWidget#Player8LEDs QCheckBox::indicator:unchecked,
QGroupBox#groupPlayer1Connected::indicator:unchecked,
QGroupBox#groupPlayer2Connected::indicator:unchecked,
QGroupBox#groupPlayer3Connected::indicator:unchecked,
QGroupBox#groupPlayer4Connected::indicator:unchecked,
QGroupBox#groupPlayer5Connected::indicator:unchecked,
QGroupBox#groupPlayer6Connected::indicator:unchecked,
QGroupBox#groupPlayer7Connected::indicator:unchecked,
QGroupBox#groupPlayer8Connected::indicator:unchecked,
QCheckBox#checkboxPlayer1Connected::indicator:unchecked,
QCheckBox#checkboxPlayer2Connected::indicator:unchecked,
QCheckBox#checkboxPlayer3Connected::indicator:unchecked,
QCheckBox#checkboxPlayer4Connected::indicator:unchecked,
QCheckBox#checkboxPlayer5Connected::indicator:unchecked,
QCheckBox#checkboxPlayer6Connected::indicator:unchecked,
QCheckBox#checkboxPlayer7Connected::indicator:unchecked,
QCheckBox#checkboxPlayer8Connected::indicator:unchecked,
QGroupBox#groupConnectedController::indicator:unchecked {
    border-radius: 2px;
    border: 1px solid #929192;
    background: transparent;
    image: none;
}

QWidget#controllerPlayer1,
QWidget#controllerPlayer2,
QWidget#controllerPlayer3,
QWidget#controllerPlayer4,
QWidget#controllerPlayer5,
QWidget#controllerPlayer6,
QWidget#controllerPlayer7,
QWidget#controllerPlayer8 {
    background: transparent;
}