code: public int[] argb(int x, int y) {
          Pixel p = pixel(x, y);
          return new int[]{p.alpha(), p.red(), p.green(), p.blue()};
      }
docs: Returns the ARGB components for the pixel at the given coordinates
  
  @param x the x coordinate of the pixel component to grab
  @param y the y coordinate of the pixel component to grab
  @return an array containing ARGB components in that order.