Port Firefox 88.0.1 style to Firefox 89+?

[OmegaAOL]

Is there any way to simply use the same chrome folder with the new Proton UI?
Folder in question: https://github.com/OmegaAOL/Firefox3Theme/blob/main/chrome.zip

This makes FX Photon look like FX 3 with some changes. Can you suggest any alternative FX3 themes for FX89 and above?

[Aris-t2]

Please do not start new discussions. Use the one already available: #454

You can always combine CSS code from different sources by using it or linking to it inside userChrome.css or this projects my_userChrome.css.
If a "theme" needs to be updated for browsers current release, the author should be contacted.