If you would like to have a new theme on your desktop then ReGe Christmas Windows 10 theme is really meant for you. This theme is a customized one which will give a complete new interface with a lot of changes in the start menu, dialog box, explorer and much more.
This Windows 10 theme also comes whole new set of icons. This theme is a blend of red and green colour which is a typical color theme of a Christmas tree. So, if you do really like to appreciate, then go ahead and install this theme on your desktop and/or laptop.
Download this theme from here.