Bright moonlit nights make everything appear as if there are no colors-- only shades of black and white. This often reminds me of the last verse of the Moody Blues song...
Cold-hearted orb that rules the night
Removes the colours from our sight
Red is grey and yellow white
But we decide which is right
And which is an illusion
From the song Late Lament by The Moody Blues, written by Graeme Edge and John Lodge