Org Branding now applies Primary + new Accent color across public pages

Settings > Organization > Branding now has a second Accent Color alongside the existing Primary Color. Primary drives headers, navigation, and other brand surfaces; Accent drives hover, pressed, and selected states broadly. Both now apply consistently across Plan a Visit, Group Directory, Forms, Media, Events, Giving, Pledge, and Rentals, replacing the previously independent color settings on Plan a Visit and Rentals.