Customize styles login page


is this possible to customize the style of login page, Is possible to use indigo theme to override the styles of this page? I just want to change the background color, change text and remove some fields, but can’t find the the files where I can change the styles in the login page

I can customize indigo theme but I can’t customize or override the login page, base on documentation GitHub - overhangio/tutor-indigo: An elegant, customizable theme for Open edX tutorindigo/templates/indigo/lms/static/sass/

Please give me some guidance of how to customize the login page,
Thank you