Changing a line chart inner circle color

protected function getData(): array
    {
        return [
            'datasets' => [
                [
                    'label' => 'Users',
                    'data' => $this->getUserStats()->map(fn (TrendValue $value) => $value->aggregate),
                    'backgroundColor' => '#E8F5E9',
                    'borderColor' => '#4CAF50',
                    'tension' => 0.5,
                ],
            ],
            'labels' => $data->map(fn (TrendValue $value) => $value->date),
        ];
    }