Linux Version Appearance

Glad to see a Linux version at last even though the Windows version runs well, for the most part, on Ubuntu in WINE.

A couple questions, though. How does one hide the table sizes from the list? They take up much needed real estate. Also, I realize that themes have not yet been implemented but the white is hard on the eyes. Try as I might, I can change the font but apparently not the colors of the overall application. I'm sure it's there and I just missed it so any pointers?

You can disable the size displaying in the tree's context menu, under "Tree style options":

These VCL themes are not supported, and will never be. They are an invention of Embarcadero and only valid in the Delphi Windows version.

But HeidiSQL should follow the system's dark mode. If it's set to dark, HeidiSQL is also displayed in dark colors. There are however a few issues with that, and qt5 builds behave differently than gtk2, but I believe the qt5 builds do it better, so probably prefer these.

I don't see Tree Style Options anywhere. Where is it exactly?

Never mind, I finally located it. On the themes, when I try to make the background darker, it seems to make it darker only under the text rather than under the entire pane. Is there a setting for it to be under everything?

Where do you edit themes? You could probably make a screenshot of the issue.