code: def push_all_pixels
  			0.upto(7) do |x|
  				0.upto(7) do |y|
  					@hat[map_coords(x, y)] = @pixels[x][y]
  				end
  			end
  		end
docs: Pushes all pixels from buffer to the lower level (physical device)
  
   This is internally used when changing rotation but it can be useful
   when you set several pixels to the same Color instance and then
   manipulate those pixels' color all at once.