Like these ones?Sure, but no one needs to chip in for it. There are a bunch on the xenforo site in the resources section, then some developers with their own sites. You'd be looking for themes working with 2.x (or 2.2.x)
Premium XenForo Themes and Styles - XenFocus
High quality, premium XenForo themes for XenForo 2.x. Dozens of features including Light and Dark modes, and Background Image Pickers!
xenfocus.com
XenForo 2 Themes – ThemeHouse
Completely customizable, powerful XenForo 2 themes that scale to any size forum. With tens of thousands of settings and customization options your forum...
www.themehouse.com