How to install the current TU Corporate Design
The files can be found here here. (Old versions can still be installed using the terminal following instructions here).
Download and unzip.
Check where the texmf folder is placed by running
kpsewhich -var-value=TEXMFHOME
Copy the content of the TU design texmf folder into this texmf folder.
Run
texhash /path/to/folder/texmf
Verify that the style files can be found by e.g. running
kpsewhich tudcolours.sty