✔ 最佳答案
銀色向出係反光
Normally, light color would reflect the heat and dark color would absorb the heat.
Like you wear Black T-Shirt and stand under the sun, you will feel hot quickly but if you wear white T-Shirt, you will feel better.
However, the Sun Shielder only can block the sun-light from the wind-shield screen, the car itself still under the Sun Light directly. When you go to pick up your car after several hours parking under the sun, it would become very hot.