heres a better explanation:
hey, the global settings live in wp-admin → Appearance → Customize → "Site Title" (text color) and "Navigation" (link color).
for a per-page override you can also go into the page, open page settings, and enable "site title color" there.
if custom css isnt working its usually because the selector doesnt match — try .lay-sitetitle a { color: #faf8f7 !important; } for the title and #lay-navigation a { color: #faf8f7 !important; } for the nav.