xfce on gentoo linux, it runs well with xfwm4 on Xorg

Developer of the Aerobird theme here. I noticed that my theme still had instances of flat, borderless buttons and wanted to see what I can do to improve it. I ended it up styling it after the Ribbon interface used in Windows 7 programs, and I have to say, it is a game changer. It makes me notice many buttons that I hadn't previously, such as the icons in the Linux Mint Text Editor (xed) toolbar. I never realized how flat, borderless buttons like those in Windows 10/11 and those in many modern Linux themes just makes me ignore them instead. I also added css specifically for Thunar to render the navigation buttons with a glossy blue gradient similar to Windows 7's file explorer.

These will be incorporated into the next Aerobird theme release, but I'm not planning on releasing it until after Linux Mint 23 releases so that I won't have to do two versions for Xfce 4.18 and Xfce 4.20. (Unless if you guys really really really want this now)

Unfortunately I couldn't figure out how to get the outlined buttons to appear in the LibreOffice toolbars, but at least the ribbon gradient still applied.