Lots of artist go through a blue period...most famously Pablo Picasso. For the fun of it I looked up the meaning of blue for this post...WOW...there's a lot is going on with blue!
The color blue symbolizes confidence and authority that is noninvasive and objective. Unlike red, blue is nonthreatening, fostering peace, dependability and security. Since the color produces a slow physiological response, blue is also the color of creativity.
Blue represents both the sky and the sea, and is associated with open spaces, freedom, intuition, imagination, expansiveness, inspiration, and sensitivity. After reading this last sentence I have no doubt why blue is showing up...open spaces, freedom, expansiveness are jumping right off the page at me!