
1) American punk rock group 2) Colorless mode at a copy shop
Found on
https://www.crosswordclues.com/clue/grayscale

In photography and computing, a grayscale or greyscale digital image is an image in which the value of each pixel is a single sample, that is, it carries only intensity information. Images of this sort, also known as black-and-white, are composed exclusively of shades of gray, varying from black at the weakest intensity to white at the strongest. ...
Found on
http://en.wikipedia.org/wiki/Grayscale

An achromatic scale ranging from black through a series of successively lighter grays to white. Such a series may be made up of steps that appear to be equally distant from one another (such as the Munsell Value Scale), or it may be arranged according to some other criteria such as a geometric progression based on lightness. Such scales may be used...
Found on
https://www.xrite.com/learning/other-resources/glossary
No exact match found.