Explain why most refrigerators are painted in a white shiny colour

it repels heat

Well, yes, but I would be more like does not absorb as much as dark colors do.

Most refrigerators are painted in a white shiny color for a few reasons:

1. Reflection of heat: White color reflects more sunlight and heat than darker colors. Refrigerators work by removing heat from the inside and releasing it outside. By using a white color, the refrigerator's exterior will reflect more heat, helping to keep the unit cooler and more efficient.

2. Temperature control: White is a good choice because it doesn't absorb as much heat as darker colors. This helps to maintain a more even temperature inside the refrigerator, allowing it to operate more efficiently and keep your food fresher.

3. Aesthetics and versatility: White is a neutral color that blends well with most kitchen interiors. It is also visually clean and gives a sense of cleanliness. Moreover, white is considered timeless and doesn't easily go out of style, making it a safe choice for appliance manufacturers.

To confirm this explanation, you can also conduct a quick search on refrigerator design and common colors used. Additionally, you can reach out to refrigerator manufacturers to inquire about their color choices and the specific reasons behind them.