Package xcolor clashing with tudapub.cls about tuda_latex_templates HOT 3 CLOSED

tudapub requires xcolor and tikz itself.

You can add the Options by switchching to

\PassOptionsToPackage{cmyk, dvipsnames}{xcolor} 

before loading tudapub.
It would be possible to add a PassingOption to tudapub as well. But I think for this case this wouldn't be necessary.

Plase pay attention to the fact, that pdfa-mode will switch to rgb colors. You should turn that one off for cmyk.

from tuda_latex_templates.

tudapub is loaded within \documentclass[options]{tudapub}, right? So should I put this comand line
\PassOptionsToPackage{cmyk, dvipsnames}{xcolor}
before \documentclass?

from tuda_latex_templates.

Yes.

To add a short explanation:
if you load a package twice with a different set of options, you get an option clash.
That's why you receive one as soon as loading xcolor yourself.
\PassOptionsToPackage adds the options to the options list to be loaded in case the package will be loaded later. Therefore you have to add it before loading the package which means before documentclass.

tudapub already choses cmyk mode, except you have the pdfa mode switched on. This is due to pdfa requires rgb, since it focusses on the digital storage and not printing.

The dvipsnames option isn't loaded so you can also get the desired setup by simply turning pdfa to false and adding \PassOptionsToPackage{dvipsnames}{xcolor}

This generally is the way to do it, when you want to add any option to any automatically loaded package.

from tuda_latex_templates.