twins bipolar

What symbol is for Bipolar Disorder?
I heard that theater is the theater smiling / frowning masks. Then I saw a pendulum and the twins are also polar. They have also seen a green ribbon awareness of bipolar disorder.
Never heard of a symbol or even I'm bipolar. I like comedy and tragedy masks, however, quite correct in its symbolism
The Bi-polar twins: Kidnapped in a BIG closet!!