如何使用颜色资源值中的颜色来更改google地图中的标记颜色？

<resources>
    <color name="marker_color">#FF0000</color>
</resources>

// 获取标记对象的引用
Marker marker = googleMap.addMarker(new MarkerOptions()
    .position(latLng)
    .title("My Marker"));

// 创建颜色资源值的BitmapDescriptor对象
int markerColor = ContextCompat.getColor(context, R.color.marker_color);
BitmapDescriptor icon = BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED);
BitmapDescriptor coloredIcon = BitmapDescriptorFactory.fromBitmap(getMarkerIcon(icon, markerColor));

// 设置标记的自定义图标
marker.setIcon(coloredIcon);

// 辅助方法，用于将颜色应用于标记图标
private Bitmap getMarkerIcon(BitmapDescriptor icon, int color) {
    Drawable drawable = ResourcesCompat.getDrawable(getResources(), icon.toBitmap().getGenerationId(), null).mutate();
    drawable.setColorFilter(new PorterDuffColorFilter(color, PorterDuff.Mode.SRC_ATOP));
    Bitmap bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap);
    drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
    drawable.draw(canvas);
    return bitmap;
}