How to easily set a custom tile color for Unity launcher's icons (Ubuntu 12.10 only)

Colors are definitely an important part of Unity, featuring multiple relevancy levels, such as high, as related to Unity's chameleonic behavior used for the Dash, notifications, etc, moderate, as related to Unity launcher's tile colorization, etc.

By default, applications are represented on the launcher with a specific icons and a tile/square surrounding area that displays the icon's average color, process that properly exposes applications on the launcher, easily perceivable and integrated into their tile.

Nevertheless, there are cases, for various icons, when the mentioned blending process is improperly rendered, consequently, the icon loses its "identity" and/or pleasant look&feel, with obvious minuses for usability (the icon is not properly perceived and identified) and/or look (breaking the launcher's fancy visual "flow").

Unity 6.0 has just landed in Quantal Quetzal, introducing, along with numerous fixes and new features, the ability to easily set a user desired tile color for Unity launcher's icons, consequently, developers and/or users can adjust a "faulty" color in a matter of seconds, as such:

• first, locate the about-to-be-tweaked app icon (usually under /usr/share/applications)
• open its .desktop file by typing in a terminal (following the bellow example)
  

  gksu gedit /usr/share/applications/gwibber.desktop

• add
  

  X-Unity-IconBackgroundColor=#F12323

  at the bottom of the opened file, the #F12323 is the desired color
  

• finally, click Save