I don't know how and where I got original PVD UserDefinedLanguage script for Notepad++, but now I tweaked it, together with Default Styler in Notepad++, so it's now easier for me to navigate through PVD scripts. Here are PVD UDL for .psf files, and tweaked default styler. You can import UDL Via Language->User Defined Language->Define Your Language->Import... and paste stylers.xml to appropriate folder for Notepad++ (The stylers.xml file for Notepad++ is typically located in the following directory ffor a normal installation: %AppData%\Notepad++\themes\stylers.xml and for a portable version: <installation_directory>\Data\Config\stylers.xml). You might want to backup your original stylers.xml, if you're not satisfied with the new Notepad++ look, and bring it back later. You can tweak the keys and colors of UDL to your likings at the place you imported it.
Choose the language PVD_UDL_final and choose Default(stylers.xml) in Settings->Style Configurator..., as in the picture 1, then restart Notepad++ and your PVD script should look like in the picture 2.