Using theme settings between Mac and Windows

Hi guys!

I recently purchased a Mac and I have started using Scriviner again on MacOS. However, I wanted to transfer my custom theme between my windows Scriv 3 and my new Mac Scriv 3, which to my surprise didn’t work. The exported file extensions are not the same.

I’ve scoured the forums for an answer on why this is or how to fix it, but all I’ve found is people confirming that this is intentional.

Is there a way to transfer custom themes between operating systems or is that totally out of the question? I assume this is because MacOS perhaps handles application appearances differently from Windows 10?

Thank you for your time and apologies if this is a duplicate post!