Does this work of art have harmony and variety? why?

Harmony is when an artwork is visually appealing to one's eyes. The warm colors of the reds and yellows matches with the cooler colors of black and blue. The repetitive 5 creates harmony as well. 

This artwork also has variety. The different sizes of the 5s show variety. Also, the different shades of the yellows, reds, and blues create variety.