Use the Language menu > Define your language. Set the Notepad++ default background RGB to 250:228:146 in Settings > Style Configurator > Global Styles > Default Styles for maximum restfulness. Yellow Background This version has a parchment background colour that I found more restful on my eyes than white.

The eagle eyed may spot that that the screen grab above is from msconfig.cfg which presents another opportunity to say that this file is look but don't touch. To transform your configuration files into this feast of colour, simply setting all the commented out content to green makes an immediate difference to legibility: I recommend setting the Notepad++ Setting menu > Preferences > Tab Settings > Tab Size to 8 for best presentation of tab spacing. However out of the box it understandably does not include the Bentley CFG file language so all text is the default colour. Notepad++ is one of the best text editors around and the one I always use for editing configuration files.

Revised XML files are linked below that contain current keyword lists for MicroStation and OpenBuildings Designer.

Notepad++ install style configurators