Drift Dark
Based off its XenForo 1 successor, Drift Dark brings it's many features back to XenForo 2. From adding your own banner, choosing either a fluid or fixed website design, this theme will still work with any style you choose.
More Drift Dark Features:
Standard, floating, or sticky navigation and userbar
Vintage Apple look and feel
Dozens of different search bar and navigation position variations
Collapsible nodes, sidebar, postbit, and signatures
Many types of category description types (tooltip, inline, or none at all)
Different login styles such as modal window, dropdown, and slideout
Option to remove the forum list page actions (New Posts and Post New Thread buttons)
Edgy welcome banner statement
Switch out the background image, node grid management, and so much more!
Curvy finish like a sportscar