Is it possible to acces variables from the unity prefabs such as the sparks and smoke

G'Day.

Just a quick question, Can I access variables from the built in prefabs, and change them via my own scripts?

The smoke, sparks, snow etc all have different options, whether it be Smoke life, size, Local Velocity..all of these options.

I haven't thought of what it will be (button , horizontal slider etc), was just wondering if it is possible :)

Cheers, Tim.