compositing – Different transparency settings for different applications on Lubuntu?

I am using Lubuntu 20.10 and the file manager (PCManFM) looks lovely when active window transparency (in ‘window effects’ settings) is set below 100% (running compton). Unfortunately this makes other applications unusable (eg. Chromium). Is it possible to apply the window effects to only the file manager, or to restrict certain applications from using it?