You can see the maroon cool coming out in the text and wallpaper. Yes Maroon has a strange history and is known as a weird colour. Thankfully it brings out Ubuntu eccentricity and playfulness. Maroon works well with Orange, but both colours on their own FAIL miserably. Nobody wants to be known as the Maroon company or the Orange company, but Orange + Maroon, we can live with.
The danger however, is that we could all suddenly go Pink or Purple overnight i.e. Mauve, forgetting that it is the blacks, reds and browns which link Ubuntu to Africa. Old Mauve and Maroon have a lot in common, the former is usually associated with household decor, while the latter is a corporate standard..