Screme eggs were brought out in the UK around 2 months before Halloween. The difference is that the goo is green, but has no effect on the delicious flavor. They are wrapped in a special green halloween-style foil, instead of being wrapped in the original foil. Some stores in England sold Screme Eggs in a 2 for 1 deal with Nestle Smarties Pumpkins.
See Also Edit
Cadbury Creme Egg (For information on an actual creme egg)