Expressionist paintings from the late 19th to early 20th centuries aimed to convey emotions through use of color, distorted forms, and rough brushstrokes. Key artists included Käthe Kollwitz, known for expressing emotion through little color in works like "Sharpening the Scythe" and "Woman With Her Dead Child"; Edvard Munch, whose works like "The Scream" and "Separation" used bold colors and contorted forms; and Franz Marc, who incorporated vibrant colors and clean lines in animal paintings like "Der Tiger" and "The Large Blue Horses" to connect to nature. Expressionist styles varied from vigorous color strokes expressing beauty to darker tones conveying mystery.