Are all Force powers available to all Force users, regardless of if they're light or dark side? Or, are some powers only accessible to those who exclusively associate (and practice) with a given side of the Force.
For example, in episode III, Yoda uses Force lightning against Palpatine, and Mace Windu uses dark side techniques when saber fighting with Palpatine. This might suggest that Force powers can be obtained regardless of affiliation. But then there are also instances, such as the conversation between Anakin and Palpatine in the concert hall, where some Force powers are described as being obtainable only through practicing that given side of the Force.
PALPATINE: (continuing) Did you ever hear the tragedy of Darth Plagueis "the wise"?
PALPATINE: I thought not. It's not a story the Jedi would tell you. It's a Sith legend. Darth Plagueis was a Dark Lord of the Sith, so powerful and so wise he could use the Force to influence the midi-chlorians to create life ... He had such a knowledge of the dark side that he could even keep the ones he cared about from dying.
ANAKIN: He could actually save people from death?
PALPATINE: The dark side of the Force is a pathway to many abilities some consider to be unnatural.
So, which is it? Could Yoda, if he wanted to, learn all the powers of the dark side too? Or, is it the case that once you commit to a certain side of the Force, then there are some powers that you can never learn?