I couldn't find the dead tortoise theme. Provide a link for that?
Did you both try with Adwaita and various other themes?
Yeah, but it's a little hard for me to make sure I did things right. I've never developed with GTK before, and never tried using a theme switcher or installed a new theme before you guys mentioned it above (Jan 24).
I tried two different programs for switching themes: gtk-theme-switch2 and gnome-tweak-tool.
gnome-tweak-tool shows I'm currently using the Adwaita theme, but gtk-theme-switch2 tells me I'm using Lightning bug, and that's the correct one.
I installed lightning bug manually after downloading it from some theme site (don't remember where).
But now looking at the Geany debug info, it looks like it may be using a separate theme, not the system themes I mentioned? Should I be copying the theme files into those directories shown in the Debug info?