Fountain of Colors

"Pink for births, black for deaths, red for storms and lightning. Today it's green, and we aren't sure what that means. We got our theories, though."
"What are your theories?"
The locals never tired of telling travelers about their theories. The fountain was their favorite landmark, though most non-locals thought the bell tower more impressive. One had to stay in Choices long enough to see the fountain change color to be won over, after all.
"There's those that say it means rain without lightning, though they call it green sometimes when it looks blue to me. I heard another that it meant somebody came up with a good new joke, but the last time they went together, I happened to know that Lal took that joke from Bur. Then there's those what say it happens on days when a big decision gets made, like when we decided to put up the bell tower. It was green then."
The young man to whom the other travelers seemed to defer smiled. "Is that why this city's named Choices, then?"
"Nah, that's because Opi Last Choice founded the city. He was called that because his father liked him the least is how it was, but he lived longer than his brothers. He put in that fountain though when he built his house, you can see it there to the side, and green was the color he liked, so that's part of the theory, that the fountain's honoring the founder." The local pointed at the Choice house while he talked and jabbed his finger toward the green banners that decorated it.
"That's enough for me to believe it," the head traveler said. He took a coin from inside his shirt and hurled it at the fountain, saying, "I'll make up my mind today if you tell me to, fountain."
The coin hit the water and the fountain water flared up high, startling everyone in the plaza. The water turned purple too, which nobody in Choices remembered seeing. The young traveler kneeled, and so did his fellows, and then everyone there because it seemed like the right thing to do, or at least not the wrong thing.
Decades later, long after the pretender's death, the king visited the city with his little son and dunked that prince right in the fountain. The locals had no idea if that was a good idea or not, but the water turned purple again, which was probably auspicious. Later kings maintained that custom and still do right up to this very day, though it caused problems on a couple occasions.
Finis