Which color is the background color, and the other colors are versatile?

Bright colors such as sky blue, orange, pink and green. Black, dark blue and gray are versatile. Good ... I personally think it is "white" and "color" ... White is versatile, because it is clean and thorough, without any influence ... Color is because it has all colors, so don't worry. Besides, it's not as fancy as you think, and it doesn't seem appropriate. When you choose a color with "black", it is no problem to wear black clothes ... I will choose it without hesitation. ! I hope you are happy every day, and there is a good mood in your backpack!