This solution will work on elementary OS 0.3 (Freya) and 0.4 (Loki), Luna users should follow PNG's answer
To change the skype icon (and many other) you have to install the elementary+ icon theme.
This theme is a community maintained addition to elementary OS's default icon theme. It contains icons for several third party applications that resemble ...
Removing previous version(If you have)
sudo apt-get remove skype skype-bin:i386 skype:i386
sudo apt-get install sni-qt:i386
Clear the old Skype folder before installing latest version.
rm -rf ~/.Skype
Preparing to Installing Skype:
Users of 64-bit should enable MultiArch if it isn't already enabled by running the command:
sudo dpkg --add-architecture ...
Guide for Luna:
After installing Skype, add this PPA which provides a patched sni-qt, and install it:
sudo add-apt-repository ppa:rpeshkov/ppa
sudo apt-get update
sudo apt-get install sni-qt
Then download and install the skype-wrapper icon pack:
(cd skype-wrapper-master/ &...
Downloading from Skype.com, the Ubuntu 12.04 (multiarch) will provide the best software for any elementary Luna or Freya installation. In the future, should a Ubuntu 14.04 version become available, then that would be preferable on Freya.
This is the normal result (unmet dependencies) with apt-get when there is a need to remove or replace a package with its other arch. The message is clear in aptitude command:
xdg-user-dirs : Conflicts: xdg-user-dirs:i386 but 0.15-1ubuntu3+elementary4~ubuntu14.04.1 is to be installed.
xdg-user-dirs:i386 : Conflicts: xdg-user-dirs but 0.15-1ubuntu3+...
The quickest way to find such problem is to verify the enabled repositories in /etc/apt/sources.list file directly and don't trust software-properties-gtk GUI tool. trusty-security & trusty-updates should have same component (main universe multiverse restricted) same as in trusty.
You have the update channel disabled, if you look for example:
So you found the solution, but I'm giving you a better info for anyone that have this problem too, I though that the Skype app was a joke but no, it's really well done, even if it's in alpha state,
So for fixing the problem basically just select Tools -> Close to tray