Use New Minty Theme by default and improve the look of controls in the top of the window.

The New Minty Theme add a nice touch to the interface with higher contrast and a nice green and dark theme. Also the look of the controls can be improved (ex: minimise, maximize and close buttons) to be more distinctive and visible like Zorin OS for example. The current linux mint theme is almost flat and simple like the modern standards but with little improvements the desktop can really establish a new standard in usability and looks.
Link to Zorin OS website: http://zorin-os.com/