Legacy Admin is most advanced and elegant White Label WordPress Admin Theme in marketplace.
Along with White Label Branding features, It comes with 20 Elegant themes and gives you an option to Create your own custom theme. You can also control full appearance of Admin Menu, Top Bar, Buttons, Content Boxes, Typography, Forms, Text and background colors, logo and so on…
UPDATE: Login page option settings taking effect for WordPress 4.5
UPDATE: WordPress 4.5 plugin compatibility
FIXED: Post/Page editor Top Bar Fixed Position on vertical scrolling
UPDATE: Login Page Logo issues fixed with WordPress 4.5