Ignore transparent pixels for non-separable blend modes?

[Dresel]

I'm using non-separable blend modes like this

SKColorFilter.CreateBlendMode(SKColors.Red, SKBlendMode.Color)

to replace "colored" pixel for an image (e.g. eye color).

Unfortunately in this sample this will also transform transparent pixels to red.
Is there are way to ignore transparent pixel for non-separable blend modes?

[Dresel]

I was looking for a SKImage.ApplyImageFilter solution, this is possible by wrapping the SKImageFilter:

public static SKImage Colorize(SKImage image, SKColor color)
{
    var filter = SKImageFilter.CreateBlendMode(SKBlendMode.DstIn,
        SKImageFilter.CreateColorFilter(SKColorFilter.CreateBlendMode(color, SKBlendMode.Color))
    );
    return image.ApplyImageFilter(filter, image.Info.Rect, image.Info.Rect, out _, out SKPointI _);
}

See StackOverflow.