A Painting I Remember

i was in my great uncles den/basement one night during a family dinner at his house. he lives ion an oldish house but it wasn't a nasty or creepy basement. he had this old kinda dusty painting of a random old man. the reason i remember this painting is because of the feeling and the expression in the mans face, all the colors that the artist used and the way that it was painted really had an effect on me. it really shows how color and tone of a painting can totally change its mood