The [text file][1] 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.

> * During the game, if mana would be added to your mana pool that isn't a color in your commander's color identity, that much colorless mana is added to your mana pool instead.

Based on these rules, yes, you could include those cards.

As of [a January 18, 2016 change to rule 4](http://www.dragonhighlander.net/Forum/viewtopic.php?f=1&t=18057), you can now use those cards to add any colour of mana to your mana pool, including Black & White mana if you're using [mtg:Animar, Soul of the 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.

  [1]: http://www.mtgcommander.net/rules.php
  [2]: http://www.dragonhighlander.net/Forum/viewtopic.php?f=1&t=18057&sid=649200cd90cc81ec8f21c81cb362935a

  [1]: http://www.wizards.com/dci/downloads/CMD_FAQ_EN.rtf