If only an optional solution is possible – it will definitely be better than coming up with workarounds/tweaks.
Dark theme can be thought of after release 1.0.
I wanted to gather in one place those elements that are an obstacle. I hope that users can have their opinion and then developers will have an easier task in the future.
Sometimes something bothers for years, but when a new option/functionality appears, he thinks "How could I live without it?"
Just the ini file with tweaks would cover all aspects that go beyond the default (light) theme and hardcoded elements.
Please note that border (described in the first post) and link_color (these blue links in the About window) are just an attempt to collect changes in one place.
The list is open and would allow you to add other "tweaks" in the future.
And if one day it is possible without tweaks – even better.