Bmpanel2

Bmpanel (Bitmap Panel) is a lightweight panel for the X11 Window System, it contains a desktop switcher, taskbar, system tray and a clock. The Application is meant to be tiny and small but also to look and feel modern.

Installing:

You can install Bmpanel from the AUR with the command:

yaourt -S bmpanel2-git bmpanel2-themes

The installed themes can be found in /usr/share/bmpanel2/themes

Configuring:

You can configure Bmpanel2 with it's built in configuration program called:

bmpanel2cfg

This is the configuration window of Bmpanel2, like you can see you have the ability to change the theme (which you can find in /usr/share/bmpanel2/themes), you can set the program which will get opened when you click at the clock (in this example gsimplecal, a simple gtk calendar application).

You can also set a Task urgency hint which when activated will highlight the urgency window in the taskbar.

In Alternatives you can set an alternative to the desktop switcher.

In the Launch Bar settings you can set a application menu.