@Jayson-Allen ,
See details in https://community.notepad-plus-plus.org/post/104192
update: I have versions of the theme files which won’t have the ugly white backgrounds temporaroly at https://github.com/pryrt/notepad-plus-plus/tree/themesPost889/PowerEditor/installer/themes ⇒ they will hopefully eventually be put into the main codebase, for distribution with v8.9 and future. But until then, you can
Exit Notepad++
Go to that URL and download the raw version of your theme(s)
For a normal Notepad++ installation, use Explorer to go to %AppData%\Notepad++
if there’s not a themes subdirectory, create it
move the downloaded theme(s) into %AppData%\Notepad++\themes
When you run Notepad++ next time, it will use the updated theme.
If you have customized your theme with user-keywords or user-extensions, this would overwrite those… I will eventually be writing a FAQ which explains a way to work around those customizations (once I don’t have to link to a branch in my fork of the code to share the theme files).