Monday Blue

Why is it Monday Blue but not Monday Green, Red or Yellow? Why there is no Tue Blue, Wed Blue, Thur Blue or Fri Blue? Who invented this term leh?

Woke up feeling so tired and felt like not waking up. How I wish today is still Sunday. This is the described Monday Blue...

Tired Tired Tired...

Today, bought 1 lot of DBS shares to average down my cost. Hopefully one day when I sell them, I can make some decent profit. :P