* Absorption: Pechay leaves, like other plants, have a system of tiny tubes called xylem that transport water and nutrients up from the roots.
* Coloring: When you put pechay in colored water, the water is absorbed by the xylem.
* Appearance: The colored water travels up the xylem and into the leaves, making the veins appear colored.
* No change to the leaves: The color doesn't actually penetrate the leaves themselves, it just appears in the water within the veins.
Think of it like this: Imagine a straw filled with colored water. The straw itself doesn't change color, but you can see the color through the straw. The pechay leaves are like the straw, and the water inside the xylem is the colored water.
