How interesting is nebula for learning or decor?

I visited a decor shop to check nebula lights for my room setup two days ago. I wanted something colorful and relaxing. I also wanted something unique. But when I checked the lights I felt disappointed. Some looked dull and the colors were not clear. Some effects did not look smooth. I could not trust them. I could not pick one confidently. Then I visited another shop in the same area. Some lights…