If there were no Sun, and no other source of radiant energy, the plants (and the entire planet) would quickly freeze. And since the color of an object is determined by the color of the light that is reflected by the object, with no light there would be no color, and everything would be black.
If we grow plants under artificial light on a space station, then the light on the space station (even if artificial) would be the same kinds of light that we humans prefer, so the plants on the space station would continue to be green.
Green plants.
The energy for photoshythesis in plants come from the sun.
From the sun. Its called photosynthesis. They get nutrients from the sun's heat.
Chlorophyl
They take the sun's energy and with chloroplasts (which make plants green) turn the sun's energy into sugar.
sunflowers Green plants
Green plants need the sun for photosynthesis, a process where they use sunlight to convert water and carbon dioxide into glucose (sugar) and oxygen. This glucose is used as energy to fuel the plant's growth and development, while the oxygen is released into the atmosphere as a byproduct. Without the sun, plants wouldn't be able to produce their own food and would eventually die.
10%
The green plant pigment that traps light energy from the sun is called chlorophyll. It is responsible for the green color of plants and plays a key role in photosynthesis, the process by which plants convert sunlight into energy.
Chemical Energy
The energy for photoshythesis in plants come from the sun.
Some plants with red and green leaves that thrive in both sun and shade include coleus, caladium, and Japanese maple.