code: func (c BGRA) RGBA() (r, g, b, a uint32) {
  	r = uint32(c.R)
  	r |= r << 8
  
  	g = uint32(c.G)
  	g |= g << 8
  
  	b = uint32(c.B)
  	b |= b << 8
  
  	a = uint32(c.A)
  	a |= a << 8
  
  	return
  }
docs: // RGBA satisfies the color.Color interface.