A ruler from one to twenty-nine on a pink backgroundA ruler from one to twenty-nine on a pink background
A mouse in a helmet at a loaded mousetrap on a blurry beige backgroundA mouse in a helmet at a loaded mousetrap on a blurry beige background
Abstract glazed purple background with lines and circlesAbstract glazed purple background with lines and circles
Dense forest on the shore of the lake against the background of the sunset skyDense forest on the shore of the lake against the background of the sunset sky
Основной цвет, тон, на к-ром пишется картина. Задний план картины. Общие условия, обстановка, где что-н. происходит ( книжн. ). Единица степени громкости.