RGB led egg

it is easter time and what could be better than a color changing egg so, i made one. im using the arduino uno.
i thought that the egg would diffuse or spread the light well and it did.
i am a beginner with electronics, programming and arduino so suggestion are welcome   

Step 1 Stuff

this project is pretty cost efficient.
all you need is:
a rgb led or three separate leds(red, green, and blue)
3 100 ohm resistors
wire
an egg
something to make a hole into the egg 
an arduino uno or similar
solder and soldering iron