This plugin uses ColorMonitor section in the global configuration file (global.ini).
The file is located at
%AppData%\obs-studio\global.inion Windows,~/Library/Application Support/obs-studio/global.inion macOS, and~/.config/obs-studio/global.inion Linux.
To hide source types and/or filter types, replace true with false for the key ShowSource and/or ShowFilter, respectively.
[ColorMonitor]
ShowSource=true
ShowFilter=true