this is actually a representation of a past self. one who was often times depressed.  there's an old country song by the Great
Reba titled "for my broken heart." and one of the lines in it is "and i guess the world just ain't gonna stop for my broken
heart."  that is this egg.  the world around it is happy go lucky, but inside and out this egg is blue as hell.
*above image may differ from actual piece
blue