[XeTeX] Colour specials for XeTeX

[Ulrike Fischer]

Am Mon, 8 Jun 2020 11:28:56 +0200 schrieb Zdenek Wagner:

>  PostScript can directly set both the colour and
> the colour model by setgray, setrgbcolor, setcmykcolor or first change
> the model and then set the colour by setcolor the number of parameters
> of which depend on the current colour model, while PDF needs k and K
> for CMYK, rg and RG for RGB, g and G for greyscale.

You can in PDF also use the setmodel/setcolor syntax with rgb etc.
e.g. 

/DeviceRGB CS /DeviceRGB cs  %set model
1 0 0 SCN 1 0 0 scn          %set color 

The RG/rg operator are only a shortcut. 

-- 
Ulrike Fischer 
http://www.troubleshooting-tex.de/