I drew the contours of a dove. The different types of blue have been clipped behind the dove and then vectorized. The various types of blue originated from spots of ink I spread on a transparent sheet and then scanned it as png.
水鴿子
animal、bird、contours、dove、ink、peace、vectorized、water
動物、鳥、輪廓、哪裡、墨、和平、矢量、水
資料來源：openclipart ( https://openclipart.org/ )