I have lawn lights for which I have made several sets of seasonal
covers.

One set is simply those plastic pumpkin candy buckets. When I
was using incandescent in the beginning they were great, nice and
orange.

I switched to little 8 LED replacement lamps for substantial
power savings and then they looked like dark pumpkins with 8
blue/white dots around the middle.

I made tubes of plain white
paper and dropped them in the pumpkins to diffuse the light and it
also made the colour much nicer. Same thing for my santa covers. I
will try the Easter eggs soon to see if it helps them also.

TIP:

Maybe try
plain white paper inside the plastic tube?