Child Wearing a Red Scarf by Edouard Vuillard, c. 1891, The National Gallery of Art (US)
This is one of my favorite Vuillard pieces. It is not very big, but I just love the little girl. She seems so proud to be wearing that "grown-up" scarf (reminds me of myself as a girl, always wanting to wear something beyond my years).
Vuillard was interested in color and he and other like-minded art students (Pierre Bonnard was one) were influenced by Paul Gauguin's use of color and Symbolism and belonged to a group called Les Nabis.