Magic mirror on slime person hair doesn't transfer the alpha value

[Plykiya]

Description

I tried doing what HumanoidProfileEditor does and

        if (_markings.MustMatchSkin(humanoid.Species, HumanoidVisualLayers.Hair, out var _, _prototype))
            _humanoid.SetMarkingColor(component.Target.Value, category, args.Slot, [humanoid.SkinColor], humanoid);
        else
            _humanoid.SetMarkingColor(component.Target.Value, category, args.Slot, args.Colors, humanoid);

Even though it does properly set the RGB value to match the skin color, it doesn't actually set the alpha to match...

Reproduction

Screenshots

Additional context

[Plykiya]

and it's even more problematic considering how simple the code is to set the color... it's not like it's ignoring any particular value

        public void SetColor(int colorIndex, Color color) =>
            _markingColors[colorIndex] = color;

        public void SetColor(Color color)
        {
            for (int i = 0; i < _markingColors.Count; i++)
            {
                _markingColors[i] = color;
            }
        }