You may have to refresh your `texhash` or similar, and then you should be set.
## The LuaLaTeX UU thesis class
This is my own rewrite of [the official (but unsupported) XeLaTeX class for PhD thesis at Uppsala university](https://libguides.ub.uu.se/avhandling/latex).
profile](https://mp.uu.se/web/info/stod/kommunikation-riktlinjer/grafiskariktl) from around 2014. They are probably outdated now.
They simply use `xcolor` commands to define a bunch of colour names.
If you want to use any of these colour names in your document, load the package in your document preamble (choose CMYK or RGB colourspace depending on how your document will be printed).
```
\usepackage{xcolor}
\usepackage{uuprintcolorscmyk}
\usepackage{uuprintcolorsrgb}
```
Please note that both `uuprintcolor*` packages depend on the `xcolor` package.
+ [How to have a local package override default package](https://tex.stackexchange.com/questions/8357/how-to-have-local-package-override-default-package/8359#8359)
+ [Undefined control sequence error for LuaLaTeX, TeX.SE](https://tex.stackexchange.com/questions/315025/lualatex-texlive-2016-standalone-undefined-control-sequence)