I usually wait until the first Advent to decorate the place up, or sometimes before 6th of December for St Nicholas' Day. We leave all decorations up until January 6th, Day of Holy Three Kings.
My christmas tree is up and decorated. It is a mauve and silver theme. I had to get a smaller tree cos the first tree was too big for our living room since we just brought a new lounge suite and it took up some room. Then it's no room for our big tree. Smaller tree is much better now.