A ruler from one to twenty-nine on a pink backgroundA ruler from one to twenty-nine on a pink background
Cute toys made of pine needles decorated with pink bows on the background of a christmas treeCute toys made of pine needles decorated with pink bows on the background of a Christmas tree
The blue background looks like the northern lights smears in the form of a heartThe blue background looks like the Northern lights smears in the form of a heart
Основной цвет, тон, на к-ром пишется картина. Задний план картины. Общие условия, обстановка, где что-н. происходит ( книжн. ). Единица степени громкости.