A couple of years ago, I created some color-coding settings for Notepad++ to work with Freemarker templates. Now, this is far from complete, but should be a good starting point, and should not be too difficult to modify to include the
more recent changes to Freemarker.
To install for Notepad++
1.Select “Language” > “Define your language…” from the menu bar (if “Define your language” is not available, the version of Notepad++ that’s installed is too old, update to a newer version)
2.Click on the “Import…” button in the “User Defined Language” dialog box that pops up