Gum bichromate negatives of cyan, magenta, and yellow or red, green, and blue are used for a full-color image. Some photographers prefer substituting the cyan emulsion in the CMYK separations with a cyanotype layer. A simple duotone separation combining orange watercolor pigment and a cyanotype can yield surprisingly beautiful results. Low density photographic negatives of the same size as the final image are used for exposing the print. No enlarger is used, but instead, a contact printing frame or vacuum exposure frame is used with an ultraviolet light source such as a mercury vapor lamp, a common fluorescent black light, or the
Blue–green distinction in language Dutch distinguish blue (respectively ' and ') and green (' and ') very similarly to English. There are (compound) terms for light blue (' and ') and darker shades of blue (' and '). In addition, adjective forms of most traditional color names are inflected to match the corresponding noun's case and gender. The terms for "blue" and "green" have changed completely in the transition from Ancient Greek to Modern Greek. Ancient Greek had γλαυκός ("glaukós") "clear light blue", also with a turquoise/teal/green hue (it was a typical term for goddess Athena's eyes, portrayed in green or light blue) contrasting