I have updated the blue fireflies to be brighter and... bluer.
If you have downloaded the blue fireflies, please re-download.
I have been looking around the site, and have seen all sorts of butterfly defaults, but no firefly defaults!
I have made three different replacements, which are blue, red, and white.
These will replace the seasons yellow fireflies with which ever colour you choose.
Please only choose ONE colour.
I have every expansion pack, and they work just fine, so I can say confidently that they are EP compatible.
Additional Credits: SimPE