Brooks specialized in portraiture and was noted for her somber palette of gray , black , and white .
Barney 's longest relationship was with the American painter Romaine Brooks , whom she met around 1914 .
Romaine Brooks specialized in portraiture and was noted for her somber palette of gray , black , and white .
Barney 's longest relationship was with the American painter Romaine Brooks , whom she met around 1914 .