Unlike your taps, a blue star is far hotter than a red one. Red dwarfs top out around 3,000 °C, the Sun is about 5,500 °C, and blue stars often exceed 10,000 °C, sometimes much more. It's the physics of glowing embers: the hotter an object, the bluer its light.
A large share of Earth's water molecules formed in the interstellar cloud that existed before the Sun was even born, more than 4.6 billion years ago. You are literally drinking a cosmic fossil.
By day, the Martian sky looks butterscotch because of fine dust hanging in the air. But at dusk, those same grains scatter blue light forward, creating a bluish glow around the Sun. Rovers have photographed these blue sunsets: the exact reverse of what we see on Earth.