Night mode

Well, this is my idea for new game mode. Make all known maps (or better make some new maps) in night mode. All players could have night vision by default (activate/deactivate by pressing type "N" for example), but CF can make some weapon ZP attachment. For example termal vison (1700 ZP 7 days), red dot (3500 GP 3 days), tracer bullets (3500 GP 3 days), Signal rocket (1200 ZP 3 days), etc.
So this new mode can give a new expirience to players and could be new source of spending ZPs (I suppose that´s the main interest of game owners)