You guys need to chill. You care way too much about a UI.
Caring about the UI is actually a good thing
So let focus on how we can improve the UI from here on 
Yeah, whilst there’s generally bigger fish to fry than a UI. The text and background are starting to merge, there needs to be highlight points separating elements so you can easily see them.
Colours and shading catch attention to important attributes (nothing wild mind due) but it does help with memory retention too. I’m not mad about it, they could just do with going back to the drawing board a little bit.
I suspect Unity might release the dark theme for free since allowing developers to customize the editor means people can easily apply a dark theme.
If they really are planning that then I assume they won’t announce it until 2019.3 releases otherwise people might unsubscribe from Plus/Pro right now.
Releasing dark for free and at the same time introducing the platinum theme for $999 per month. People will buy it just for prestige, as it’s exactly the same as dark theme. Everybody wants platinum for free from then on and argues both, light and dark theme, are bad for the eye. 
The platinum skin would be so dark you’d have to be 18+ years old to use it. It would have zero contrast between the text and the background and will be summed up as “just a solid black rectangle on the entire screen”
Politeness is required here. You can lose your ability post altogether. Warnings issued and thread closed. Keep it civil and productive or you can’t play here.
As someone who spent most of my life making UIs it does hurt to have to look at Unity. I’m hoping a designer never went near it and it has been designed entirely by some autistic C++ developers. It is disappointing how after all these years they didn’t improve it even though just picking some better colors and tweaking spacing would go a long way. Unreal Engine for example have greatly improved their look since I last tried it. Godot looks a lot better as well.