Several features of this rainbow are similar to features of real rainbows: the colors are in the correct order (red outside and blue inside, a bit washed out in the central region in the photo) and are reasonably realistic, the area outside the rainbow is very dark, compared to the area inside the rainbow, and several supernumerary bows (white circles) can easily be seen inside the rainbow.
The real primary rainbow is at about 41 degrees, and the secondary rainbow is at about 52 degrees. The higher index of refraction of the glass beads shifts the primary rainbow to 22 degrees and the secondary rainbow to 88.5 degrees.