Hi @Nacandev
Just an idea to the next release 
I don't know if you noticed the arrival of the Turn to Chart plugin which allows you to display a chart from a table. This is going to be very useful for many of us I imagine... And it's going to lead us to do more and more tables in Joplin 
The only problem when working on a chart in Joplin is the readability of it. This plugin can improve things but is (was) not very efficient with dark themes (like yours).
Maybe it would be interesting to integrate the last discussions to bring a better readability to the tables?
It's a suggestion. I don't want to make your week too heavy!
Have a nice evening.