Look at almost any passenger jet at an airport and the fuselage is white. There’s a reason airlines pick that color over and over again. White paint reflects sunlight instead of soaking it up, which keeps the plane’s metal skin cooler on the ground and uses less energy on cooling once passengers board.
Paint is also surprisingly heavy. A full paint job on a Boeing 747 can add over 600 pounds - about the weight of four adults. Heavier planes burn more fuel, so airlines try to keep paint light. White also doesn’t fade as quickly under high-altitude sunlight as bright colors do, which means less repainting over the plane’s life.
There’s a safety reason too. Mechanics inspect aircraft skin for tiny cracks, oil leaks, dents, and lightning strike marks. All of those show up much more clearly on a white background than on dark paint. So that boring white look is actually doing a lot of important jobs at once.