Sort of a cosmic Easter egg. The Bubble Nebula can be found near Cassiopeia. The colors have been enhanced to bring out the color contrasts. This is from one of my favorite astronomy sites and was featured back in November of last year. The nebula is the hot bluish gasses. The surrounding cloud that hampers the nebulas' expansion shows up as the reddish-golden to purple colors. I know I couldn't come up with eggs those colors. :-) But I wish I could.