Currently joxy has a rather bad support for dark themes, such as Obsidian Coast.
Using a dark theme with joxy often results in a black text on dark grey background (usually in menu) or light gray text on white background (JTable), which is nearly impossible to read.
Screenshot showing both problems is attached.
This happens since we do not properly set the text color on all components. I'll look at this soon.
Thank you for bringing this to our attention!
I implemented that at least the menu bar uses the correct text color (see the current Git version).
There are a lot of other components that do not behave properly. Especially components of which the background (in light color schemes) is white, still have a white background in a dark color scheme. That also causes the issues with JTable, where white text on a white background gets unreadable.
I'll just use a dark scheme on my desktop for a while, and try to fix those issues :-)