I like opal, it's pretty, it's neat, and unique. What I don't like, is how we're 10 years into eso and only have a pitiful handful of opals to choose from, there should be a minimum of 3 or 4 new opals each undaunted event.
The color itself - this opal texture looks ugly. Remember what the enchanted items from TES III morrowind looked like. I think they tried to do something similar, but it turned out badly.