Can I use a card with "Add one mana of any color to your mana pool" in any Elder Dragon Highlander (EDH) deck?
The text file found on the page you linked to with Commander info has a better description of the rules that clears this up. The important parts:


  
  A card can't be included in your deck if any mana symbol in its mana
  cost or rules text is a color not in your commander's color identity.
  A card also can't be included in your deck if it has a
  characteristic-defining ability defining it to be a color not in your
  commander's color identity.
  


The cards don't have mana symbols, so you are good on that front. Yes, you could include those cards.

As of a January 18, 2016 change to rule 4, you can now use those cards to add any colour of mana to your mana pool, including Black &amp; White mana if you're using Animar, Soul of Elements who has neither in its identity. Historically, if you tried to add a colour of mana to your pool that wasn't in your commander's identity, it would just add colourless mana instead.