"Aquatint" is a printmaking technique where an image is etched or engraved onto a plate. "Color aquatint" simply refers to the use of multiple colors in this process, adding more complexity and vibrancy to the print. Full definition
Lot 46: RADCLIFFE BAILEY (1968 ---RRB-, «Until I Die / Georgia Trees and the Upper Room,» 1997 (color aquatint with drypoint and burnishing, xerography and chine collé on cream wove paper). (culturetype.com)
Signed and dated «Adolph Gottlieb 1971» in pencil l.l., numbered «83/90» in pencil l.r. Color aquatint on paper, plate size 17 1/2 x 23 7/8 in. (barnebys.com)
Walton Ford, Pestvogel, 2016 six color aquatint etching with hard ground, soft ground, spit bite, sugar lift, and drypoint plate size 28 x 22 inches, sheet size 40 x 30.75 inches edition of 65 published by Kasmin Editions, produced and printed by Wingate Studio Purchase / Inquire Project and Artist Info (wingatestudio.com)