It's not the only color for a cause. Purple probably won't be the only porch light color you'll see. People use red porch lights to highlight women's heart health. And blue porch lights, like blue ...

That’s when Dorgan started the initiative, “Light up the community purple for mental health” through his non-profit, Building Bridges for Brianna.

Suddenly finding yourself in a street bathed in garish purple light can be unsettling. But a bigger concern is that this light can change how drivers and pedestrians perceive their surroundings.

Grandma Hill lives in Natomas and got the video on her cell phone of little Johnny, 8, and Audrey, 5, praying about this mysterious purple light. "Hey, God. Please help me.

Since pink light consists of a combination of red and purple light waves, it could also be beneficial — in theory. However, there’s no research backing the claim at this time.