where are the helpful utility css classes/variables for angular material?

Question

I am relatively new to using angular material and it has taken a bit more work to use than I have faced using some other css frameworks like PrimeNG, Fomantic/Semantic UI. Most recently I have used PrimeNG which optionally comes with its own suite of utility classes in the form of the primeflex package. It does not appear that material has this (due to them leaving it up to you to decide i suppose) and I am therefore opting to use primeflex WITH angular material components. Is there an existing suite of material css classes that i can use instead, like simple classes that just give flex styles, height: 100%, etc.

My other problem is that I would like to tap into material in order to give my components background/font color styling relative to the current theme but I have not been able to find a 'helper class' that applies the current primary/accent/warn color to an element given the current theme. Any references to documentation are highly appreciated.

I assumed it would look something similar to:

// my-theme.css

@use '@angular/material' as mat;

.my-primary-text-class {
  color: mat.$primary-text-color
}

or something similar?