Duotone is a halftone reproduction of an image using the superimposition of one contrasting colour halftone (traditionally black) over another color halftone. This is most often used to bring out middle tones and highlights of an image. The most commonly implemented colours are blue, yellow, brown, and red.
Due to recent advances in technology, duotones, tritones, and quadtones can be easily created using image manipulation programs.
Duotones hail from cyanotype and halftone prints. Color images in newspapers and comic books are usually halftone prints and occasionally duotones.
Duotone color mode in Adobe's Photoshop computes the highlights and middle tones of a monochrome (grayscale or black-and-white) image in one color, and allows the user to choose any color ink as the second color.
A fake duotone, or duograph, is done by printing a single color with a one-color halftone over it. This process is generally not preferred over a regular duotone, as it loses much of the contrast of the image.
ming:
you follow streets, you listen to voices
you look at your feet, you listen to voices
look up at the sky, the birds are surrounded
the sun in your eyes, it’s just in your mind
it’s just an angel in your mind / it’s just a smile on
your face
it’s just a speckle in the sun / it’s just the color and
the shape
ping:
find all the colours all around
find all the secrets in the sounds
take down the message that you’ve found
stand by the window looking out
always on my mind