Shmatko considers his works to be realism and he prides himself in the accuracy of his paintings and their understandability. He says his inspiration is at its peak when he is painting the beauty of his native Ukraine. He seeks total harmony among the form, tone, space and color in his works. His peers consider Shmatko a master of color. Critics have said, "his palette contains an infinite number of shades and tones layered in a sophisticated, yet subtle manner".