ADDITIONAL SYSTEM INFORMATION :
macOS Sonoma 14.2.1 (23C71)
openjdk 21.0.1 2023-10-17 LTS
OpenJDK Runtime Environment Temurin-21.0.1+12 (build 21.0.1+12-LTS)
OpenJDK 64-Bit Server VM Temurin-21.0.1+12 (build 21.0.1+12-LTS, mixed mode)

A DESCRIPTION OF THE PROBLEM :
In dark mode all tray icons on the display that is not currently "in focus" are usually dimmed. Since macOS Sonoma templated images for java tray icons no longer behave as expected on non focused displays.