I am finding some problem trying to understand how to set the PrimeNG theme. If I go here: https://www.primefaces.org/primeng/showcase/#/table/crud
I can see that the theme set by default is the bootstrap4-light-blue.
Ok, how can I set this theme in my project? I am using PrimeNG but I can't find themes into my project.
Have I to install in some way? What am I missing?
EDIT-1: Into the folder of PrimeNg themes of my foler (/home/developer/Documents/Angular-WS/color_patch/node_modules/primeng/resources/themes) I only find these few themes? why? It seems to me that a lot of themes is missing. Isn't it? In particular the themes related to BootStrap seems to be not present

