StatusBarAppearanceToggle
Mac app to add a Status Bar icon you can click to change between light and dark mode. Right-click on icon to close.
ONLY WORKS ON macOS/OS X.
Uses AppleScript/osascript.
I highly recommend using a jar-to-app-bundle packager, but it can be run from the command line without issues.
I use Export as Runnable JAR File in Eclipse without issue.
The icons are from Google, and they look best on devices/versions of macOS where the status bar changes color with light and dark mode. Originally created for an iMac on macOS 10.14.4 (Mojave). You are encouraged to swap the icons out for icons of your choosing.