have you seen the purple headed rabbit?

During my time in hospital, I often spoke with other patients about their various struggles with mania and psychosis.
There was a man on the psychiatric ward who would spend his days asking everyone, "Have you seen the purple-headed rabbit?!".
Alas, I never met him.
I am interested in creating artwork that illustrates not just what these people saw during their episodes, but also how it felt.
This is how I imagine the purple headed rabbit.