This is the reality of dreaming.
When I fall asleep during the night, I could not feel anything at that time. Maybe it was the same feeling of our afterlife. Also, this is why the skeleton be positioned at the corner and the whole image presents an inclined triangle.
At that period of time, the final exam stressesed me out. I had the nightmare for couple days. So the color means my mood.
The grass around the frame inspired by the famous painting <The Starry Night>.