What color does the white character match the door?

Do you ask what color the white characters on the billboard match with the door head? White characters can match black background, blue background, green background and red background. Black should be considered according to industry. Many people don't like the black background, the red background is a little earthy, and the blue background and green background can be given to some catering industries, fruit and vegetable industries and so on. , representing the significance of environmental protection, can be used in all industries.