// Define the default theme (same as the example above).
$my-theme-primary: mat-palette($mat-indigo,800);
$my-theme-accent: mat-palette($mat-deep-orange, 500);
$my-light-theme: mat-light-theme($my-theme-primary, $my-theme-accent);
By default gene gives the following color set, you can change as per your requirement
Simply choose the color you want from the pallete and replace that in the file for e.g. if you wish to change the primary color with Purple - 400 simply choose its hex value (#ab47bc) and replace in the file.