1891, Gustave Caillebotte, Boats and Shed on the Banks of the Seine (detail) -- Wallraf-Richartz Museum (Cologne)
From the museum label: This painting is notable for its luminosity. The red and yellowish green hulls of the boats are reflected in the water with hardly any loss of colour, the contrast being reinforced still further by the direct use of complementary colours. IR reflectography reveals lines in the sky which clearly derive from a first lay-in of the composition: if the picture is inverted, the strokes can be seen to represent the hulls of two boats, arranged in echelon, just like the boats in the "final" riverscape. It would appear that the artist decided they were too big. He simple inverted the canvas and started again!
Link to the full painting.
1891, Gustave Caillebotte, Boats and Shed on the Banks of the Seine (detail) -- Wallraf-Richartz Museum (Cologne)
From the museum label: This painting is notable for its luminosity. The red and yellowish green hulls of the boats are reflected in the water with hardly any loss of colour, the contrast being reinforced still further by the direct use of complementary colours. IR reflectography reveals lines in the sky which clearly derive from a first lay-in of the composition: if the picture is inverted, the strokes can be seen to represent the hulls of two boats, arranged in echelon, just like the boats in the "final" riverscape. It would appear that the artist decided they were too big. He simple inverted the canvas and started again!
Link to the full painting.