Dichotomy is a theme with the aim to, quote, "…integrate Ubuntu’s original and distinctive identity (orange and brown) into Lucid Lynx’s upcoming Brand refresh."
If you love the new Ubuntu colour scheme and, in particular, the Ambiance theme then you’ll likely love Dichotomy.
It adds purple highlights to the menu’s and tooltips: 
Reintroduces some citrus loving with vibrant oranges for highlights and widgets 
Download
https://wiki.ubuntu.com/Artwork/Incoming/Lucid/Dichotomy