It is better to use black on one side.
Black curtains are thermal insulation curtains, and thermal insulation curtains are functional curtains. Not only can it block light and protect against ultraviolet rays, it can block sunlight in summer, and it can also serve as insulation in winter. Every function has been tested. Nowadays, many families choose thermal insulation curtains, especially those on the top floor and those with west exposure. Thermal insulation curtains do have good results. They use advanced weaving technology to make the curtains have an anti-UV index of more than 99%, a heat insulation rate of 58%, and a thermal insulation rate of 58%. Fifty-seven.
The choice of curtain color can be based on the owner's personal preference. In addition, if it is winter, you can choose red because red is the warmest. Secondly, the color of the curtains can be consistent or similar to the color of the home decoration, which can make the matching more coordinated. For people who are prone to insomnia, you can try to choose curtains with a combination of red and black to help you fall asleep as soon as possible.