Dark Christmas
The term ‘
Dark Christmas’  combines the meaning of  the word ‘dark’ with the rather cheerful  occasion ‘Christmas.’ Notably,  the word ‘dark’ carries three main  ideas,
- I. Devoid or partially devoid of light 
 
- II. Arising from or showing evil traits or desires, or dark powers 
 
- III. Unenlightened or relating to grim or depressing circumstances 
 
And the word ‘Christmas’ refers to the anniversary of the birth  of  Jesus of Nazareth, the spiritual leader of millions of Christians  across  the globe. It is not only a sacred religious holiday held every  in  December 25th, but also a cultural and commercial phenomenon. Among  its  most common traditions, customs of exchanging gifts, decorating   Christmas trees, attending church, sharing meals are popular. Santa   Claus has a significant role in the event as well.  So, when put  together, ‘dark Christmas’ has an utterly different set of   connotations. Interestingly, each of these depends on the context of the   word’s usage. 
Dark Christmas Legends
Origin  of the exact phrase ‘Dark Christmas,’ is connected to the age  old  ‘Dark Christmas Legends.’ These Dark legends creep behind the  Christmas  celebrations of the festive season and reveal a dark side, in a  part  of Europe from Iceland to Greece. These myths bring mischievous   creatures such as goblins, gnomes and Santa's sinister companions to   life. 

Goblins  such as Yulemen of Iceland appear from days starting from  12th of  December until Christmas Eve, and steal meat, sausages, milk and   candles, and play tricks on humans.  Similarly, the Kallikatzaroi of   Greece is a set of ugly hairy goblins that practice mischief on the   planet by playing pranks, befouling food and scaring humans. Julenisse   in Scandinavia and Tomte in Sweden become nasty if mistreated.  Pere   Fouettard (or Whipping Father) in France, who is depicted as a murderous   extremely terrorizing figure with his blackened face stick or a whip  in  hand, is a companion of St. Nicholas. Knecht Ruprecht in Germany is   another evil spirit whose job is to scare children. Krampus in Bavaria,   Austria, Croatia and Slovenia, Schumutzli in Switzerland, and  Belsnickel  are other such sinister characters. 
Dark Christmas
The  period between December and February, the winter holidays, or the   Christmas time is statistically marked as a period, which indicates the   highest level of stress and depression. This is referred to as Dark   Christmas in modern context. According to the researches, this situation   arises as a result of the upcoming Christmas holidays. Despite of  being  a time for excitement and relaxation, some people worry too much  about  the holiday planning. Accordingly, some keep worrying about  family  conflicts that might occur. Those who have not settled down yet,  bother  about having no place to go. The depression continues through  the whole  winter, making it a dark Christmas. 
Dark Christmas Decorations
Many  new Christmas decorations use the beauty of the blend of light  and  darkness in the dark Christmas evenings. Apart from candles and   electrical decorations, a new type of Christmas decoration has evolved   in recent times. Glow in the Dark Day Colour Pigments are now available   in the market. This product can be used to paint the Christmas   decorations. They glow in the dark under low light conditions after   being exposed to strong light for five minutes. These new commodities do   not require electricity to illuminate. Glow in the Dark Day Colour   Pigment is a solvent-based pigment, and white paint mix, which looks   like snow in daytime. Therefore, it is ideal for both internal and   external use, especially for green plastic Christmas trees. It also   comes in a new Green premium pigment that gives more intense glow   effect. It can be use on your front window, and plastic or foam balls.