var image/color.Gray16Model

3 uses

	image/color (current package)
		color.go#L173: 	Gray16Model  Model = ModelFunc(gray16Model)

	image
		image.go#L936: func (p *Gray16) ColorModel() color.Model { return color.Gray16Model }
		image.go#L968: 	c1 := color.Gray16Model.Convert(c).(color.Gray16)