What is the most effective way to modify the default primary color for primeNG (saga-blue theme)? Altering --primary-color does not have the desired effect, as elements in node_modules/..../theme.css are styled using the main color hex rather than '--primary-color'. Additionally, attempting to override the styling for all elements that utilize the primary color is challenging due to the multitude of elements and varying shades of --primary-color on hover and focus. How can this be successfully managed?