Set Colour

A colour table entry is filled with a new RGB value.
Format:
SPECTRA> set col$*$our[/rgb=(ir,ig,ib)]/in$*$dex=colour_index
SPECTRA> set col$*$our/reset

Description:
The colour cell no. colour_index is filled with a new RGB triple. The components of the triple are in the range [0,255].

If the /rbg qualifier is not supplied, the corresponding colour cell is reset to the default.

/reset resets the first 10 colours.

See section 10.5 for the explanation of the colour concept.

e.g.:
SPECTRA> set col/rgb=(255,0,30) 2
The colour RED (index = 2) is slightly shifted to blue.