Dream in purple and light blue

Hi,

I made a dream a long time ago, I was around 17 years old.
My dream was first in light blue color, like I was walking in my town, but there was no one living, like time was stopped. Nothing move except me.
When I say that my dream was blue, it does not mean that every object was blue, it's like the rays of light were blue like a almost transparent blue layer. Then while walking in the town I arrive in front of some kind of color border. On the other side of the border, everything is purple. The sun is purple. Then I cross the line and I'm now in the purple "world" and walk again until I wake up.

Isn't it a bit odd? What could it be?

Mey Tweet