Beamer customization I: colors and \setbeamercolor

Recently, I started using beamer for creating slides with LaTeX. My intention was to mimic, to a sensible extend, the available design of my slides in power point. This circles around three main issues:

1. A custom color for headlines, titles, etc.
2. A footline that displays the title, author, institute, date and slide number in two lines
3. Logos at the right top and left bottom of each slide

None of the available beamer themes truly met my requirements, so I started to customize the default theme. It took some time and a lot of manual reading, so I am providing my solutions for these requirements. Due to the amount of code required, I will release the complete template in multiple posts.

The first issue, A custom color for headlines, titles, etc., was pretty easy to solve by customizing the color theme of certain beamer elements in my preamble.

\definecolor{UniBlue}{RGB}{83,121,170}
\setbeamercolor{title}{fg=UniBlue}
\setbeamercolor{frametitle}{fg=UniBlue}
\setbeamercolor{structure}{fg=UniBlue}

\definecolor is a standard command from the color package. \setbeamercolor can be used to change the default color of certain beamer elements. In the example, the elements title and frametitle should be self-explanatory. structure refers to elements such as bullet points. Unfortunately, the beamer documentation leaves no hint as to what beamer elements actually exist. A quite comprehensive list can be found here. fg sets the foreground color. The other option is bg for background. The command also comes in a starred version, \setbeamercolor*, which is useful if there are cummulative calls of the command for the same beamer element. The starred version first resets all configurations to their default values, while the non-starred version only changes the specified configurations. So, to change the color for the same element multiple times without side effects, use \setbeamercolor*.

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