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All kinds of GOL particles use Temperature to display in heat mode how long it's been since a particle has been born. A LIFE particle is always born at the highest possible temperature, and gently falls to the lowest temperature until it's destroyed by any means.

…In other words, the newer a particle is, the hotter it will be. Watch GOL on heat view and you'll see what I mean, older ones slowly fade to blue while newer ones remain purple.

You can abuse this to heat other elements, but otherwise it doesn't have much besides aesthetic use.