
1) Color space
Found on
https://www.crosswordclues.com/clue/coloroid

The Coloroid Color System is a color space developed between 1962 and 1980 by Prof. Antal Nemcsics at the Budapest University of Technology and Economics for use by `architects and visual constructors`. Since August 2000, the Coloroid has been registered as Hungarian Standard MSZ 7300. Like the OSA-UCS and Munsell systems, the Coloroid attempts .....
Found on
http://en.wikipedia.org/wiki/Coloroid
No exact match found.