Symbols
Gold
The chemical symbol for gold is Au, the first two letters of the word autism. The color gold is used to show the bright and shining future of people with autism, rather than the common belief that being autistic means being doomed to lifelong suffering and hardship.

Infinity
Often rainbow or gold-colored, the infinity sign represents the endless possibilities for individuals on the spectrum. The gold color is associated with the aforementioned symbol, and the rainbow symbolizes the color spectrum that is full of wonder and light, just as autism is a spectrum full of unique traits and miraculous people.

Butterfly
A relatively newer symbol, the butterfly signifies change and diversity within the autistic community.
