1) Art crayons 2) Certain Degas works 3) Certain drawings 4) Crayon drawings 5) Crayons 6) Delicate colors 7) Gentle colors 8) Many degas works 9) Many of the works of Degas 10) Mellow tones 11) Muted colors 12) Soft colors 13) Soft-colored sketches 14) Some Cassatt works 15) Soothing art 16) Summer shades Found on https://www.crosswordclues.com/clue/pastels