More and more airlines/pilots have the wing light at night and when parked.
Some even idiots taxi with landing lights and dont think about switching them OFF when approaching or facing another aircraft until my landing lights start flashing ...
Think of the other...wing light while parked and at night is poor practice and not nice to those parking next to you.
For your walk around use a FLASH LIGHT for crying out loud..
When i hold short or stop taxi i do switch off the taxi light night or day.