Growing up, my mom always had a colour scheme for our Christmas tree. I remember blue and silver, purple and gold and lots of other different combos. She also has P.O.P.D.... perfect ornament placement disorder. If my sister and I were to try and decorate the tree without her, she would come in and rearrange and make sure everything flowed properly and that there were no gaps. But can there really be a perfect way to decorate a Christmas tree? I know lots of people who dont have a theme, a colour pallet or care about where the ornaments go. Apparently, according to science, there is a perfect way.