Primary Color - MDB Standard Installation

Hi all together,

I am new in MDBoostrap and I am very impressed about this product. The last time I work with bootstrap is years ago and its time to renew all my skills.

To my question:

I have an complete Installation of MDBootstrap via Zip Folder. Evertything works fine.

Now, I try to change the primary color via Sass. I was creating something like:

$theme-colors: (
"primary":#e20000,
"secondary":#becc00,

);

Just an example. I put this code under /scss/custom/_variables.scss and try to compile it with "Live Sass Compiler" under "Visual Studio Code".

I try nearly everything, but I need some help.

Can somebody explain in easy words how to change the primary-color, secondary-color, where I can change the basic bootstrap Styles??

Is there maybe an Sass command I can use, maybe like "sass mdb.free.scss main.css" something like this? I already try, I get the the colors but then I miss other classes like "text-light" or similar...