Personally, I don’t like raining day, especially, walking outside in a raining day. Water is everywhere, from sky, from street, there is just no where to hide. And it gets worse when it is a windy raining day. No matter how much dislike, that is a weather phenomenon and can’t be escaped. Hence, having something to cheer ourselves up in a wet day is important. A color changing umbrella might do the trick.
The color changing umbrellas come printed with special ink, white when dry, that comes to life when in contact with water. With a reasonable 27 USD price tag, why would you buy a normal umbrella again? At best you will look cool, at worst you will confuse a generation of children into thinking rainbows are leaking color from the sky. Pretty cool right?