I have noticed that when I switch to night mode that a majority of the "ground" stays the same color as day mode. Only small pockets turn the darker color. The streets and the distance key does change. Is this normal?

__________________

2005 545i Sports/Prem Package
(Retired) 2003 X5 4.4i-sport package, cold weather package, OEM trailer hitch, 20' replica metallic pewter 215's, X-pipe, Navi w/ custom splash (MUFC logo), cross drilled brembo rotors with Akebono ceremic pads.