

Sure, drop me a note with the details and I’ll see if I can give you a hand. I’m not super expert in all the specifics of the Chromebook ecosystem, but I have good general computer/Unix skills and have hacked a couple so I know where to look for resources.
I was so annoyed by the dialog-buttons-in-title-bar nonsense that I ended up replacing my system gtk3 package with gtk3-classic the first time I used gimp after the 3.0 upgrade. It fixes some other bizarre gnome-isms so GTK3 software is less-jarring under KDE (or …anything not gnome).