Since I want a parallax scrolling background I did a deeper research. I looked into GIFs and parallax backgrounds examples. Creating a scrolling background seems a bit difficult but I will look into Unity tutorials. I want the game to be as smooth as possible, so I will mainly focus on the background a bit more. I also looked into winter colour schemes for the 2D scrolling game.

To summarize my plan for the 'Flappy Bird' game so far. I will import changes and replace the 4 sprites with a christmas theme. The background will be a dark winter using the colour schemes (below). Including mountains and trees which will be a parlalax scrolling game and the ground will be snow. The font will be bold with either snow or lights wrapped around the text. And, the character sprite will possibly be a reindeer.