Throwing a Christmas party? Well, you know that decorating your house is one big step for a fun time, even if it's just a casual evening with friends. Forget about those traditional ornaments that look awfully jarring. Think about choosing a color theme for Christmas that will make all of your decisions a lot easier to take. Starting from the tree and ending with your chic outfit. Color themes for Christmas are a major trend in home décor. Upcoming holydays decorating ideas: red, blue, green and stylish black&white color themes.