GC [n1],n2[,n3,n4] n1: Graphic plane to be coloured <last graphic> n2: Red grey-level (or colour code) <0> n3: Green grey-level <0> n4: Blue grey-level <0>If n2,n3,n4 are all specified, the graphic plane colour is set explicitly to the specified RGB colour, or to the closest approximation of the specified colour, given the display's hardware capabilities. If n3,n4 are not specified, and n2 is between 1 and 16, then n2 represents a colour code.
The available colour codes and their RGB values, are indicated below:
n2 Colour Red Green Blue 1 Light Pink 255 127 255 2 Pink 255 63 255 3 Magenta 255 0 255 4 Red 255 0 0 5 Light Orange 255 127 0 6 Orange 255 63 0 7 Yellow 255 255 0 8 White 255 255 255 9 Black 0 0 0 10 Forest Green 0 127 0 11 Dark Green 0 63 0 12 Green 0 255 0 13 Blue 0 0 255 14 Turquoise 0 127 255 15 Dark Turquoise 0 63 255 16 Cyan 0 255 255