code: func GetPixelColor(x, y int) string {
  	cx := C.size_t(x)
  	cy := C.size_t(y)
  
  	color := C.get_pixel_color(cx, cy)
  	gcolor := C.GoString(color)
  	C.free(unsafe.Pointer(color))
  
  	return gcolor
  }
docs: // GetPixelColor get pixel color return string