^What is that?
I don't like how sith are ruled by vengeance, revenge is for the weak-minded, there should be other motives on the path to power that don't cloud judgment. I think writers use revenge as a means because they want the character to fail in someway, be it turning from the dark, or killed by the self destructive nature that is revenge. A sith should overcome the past, being a moron that thinks only of smiting those that wronged them isn't an efficient use of power.
And that is not the question, which is irrelevant, because there is no light or dark, just coffee which if you use milk is coffee coloured. Coffee is power, it's easy to make and it gives you energy, you don't need to have breakfast if you have coffee... Of course the Jedi will tell you coffee is evil because it's the easy path, but what would they know with out tasting it's warmth. No apprentice the Jedi would have you eating grains like a peasant, then meditating for an hour to get your energy.
But My Lord, isn't it the easy path to power?
No, because it doesn't last, does peace and tranquility last?
If it is within and caused by years of practice.
...... [sound of coffee percolator]
That's just wrong.... but canonically right, which is wrong.