Fancy Equations in Latex/beamer with Tikz

LaTeXSo, when I discovered that Tikz and Beamer are made by one and the same guy (Till Tantau), I was very much pleased, since I then assumed that I could use the \onslide<> command inside tikzpictures (to make fancy equations, as hinted at in the title). It turns out that this is indeed the case, though complications arose in connections to this, and I thought I would document here how I went about it:
So, the mission was simple: use Tikz to make equations with colored labels on the terms. 

Dealing with TeXnicCenter and PDF’s (in short: use sumatra)

TeXnicCenter logoSo, I have just spend a while struggling with understanding why my present TeXnicCenter installation won’t open files in Adobe Acrobat Reader X – it has, for years, worked on and off, with no apparent reason for being in either state. Once upon a time, a simple reboot would allow me to once again access the pdf-output directly.

 However, those days are gone and I decided to actively try to understand the issue.
 After having googled far and wide, I discovered a very interesting discussion at adobe’s website: