How to change Zorin's grey buttons (minimize, maximize and close) to a Windows 7 theme

1. Open a terminal (Ctrl + Alt + T)
    Type the following commands:

    sudo add-apt-repository ppa:upubuntu-com/gtk3
    sudo apt-get update
    sudo apt-get install win2-7-remix-theme

2. Run Ubuntu Tweak
    Click the Tweaks tab and select Theme

    Change Gtk theme to Win2-7
    Change Window theme to Win2-7


BEFORE

AFTER

How to fix system clock from changing when dual booting between Windows 7 and Zorin OS 6

1.  Boot into Zorin OS 6.

2.  Open a terminal (Ctrl + Alt + T).
     Type the following command:
           sudo gedit /etc/default/rcS

Look for UTC=yes and change this to read UTC=no.

3. Save file and reboot computer.

The system clock should now be the same whether you boot into Windows 7 or Zorin OS 6.