Sorry can I just say, the funniest thing about the Opalite lyrics to me is that while the message is very clear -- your world was dark before me, I made it so much better, brighter and more colourful -- the imagery doesn't really work. She said in an interview that she chose opalite because it's man-made, and she was trying to say that relationships take work. Okay, fair, but now you're comparing a synthetic glass against a naturally occurring mineral that is often significantly more valuable, and much hardier*.
Then there's the fact that "onyx night" is not an uncommon phrase in writing, and it's almost always used to describe a night that is very dark but in a desirable and/or exciting way. If we want to be extra pedantic, we can also point out that onyx isn't always black anyway, there's actually a very wide variety of onyx -- not the technicolour of opals, sure, but still --and black onyx is often streaked or layered with white (it's an agate).
And both of these things are pretty surface level readings of the lyrics, which I think just goes to show how much they really don't work even when you somehow excuse the racist undertones (which you shouldn't. racism is very bad and should not be tolerated even in more coherent lyrics). But yeah. It's just funny to me that this is the woman who has repeatedly been lauded as this generations greatest songwriter. She really should to read more. Maybe take some classes. Just get some new ideas in her head.
*Additionally funny because it relates to my previous reading of The Alchemy, where it sounds like she's putting in a lot of effort trying to turn something mundane into gold. If/when they break up whatever swifites are left are going to have a field day looking back and going "oh my god she was secretly trying to tell us she was miserable the whole time".
Yeah, it really is not solid imagery to build a song off of, it's very weak and the closer you look at it, the more it doesn't really have any substance and falls apart... and if that's not a good summary of TLOAS as a whole, idk what is lol.