Hi,

You can add your own styling in ./css/style.css file.

F.e., if you want to change color of a HTML element with text-primary class, it's enough to add to ./css/style.css file:

a.text-primary:hover{
    color: green !important; 
}

Also, you can check all the specified styles in ./css/mdb.css file.

Hope I could help.

Best regards.