Copy the drawing color of this renderer in color

Property definitions

sdl2 $ SDLRenderer :: draw_color_copy
	# Copy the drawing color of this renderer in `color`
	fun draw_color_copy(color: SDLColor) `{
		SDL_GetRenderDrawColor(self, &color->r, &color->g, &color->b, &color->a);
	`}
lib/sdl2/sdl2_base.nit:292,2--295,3