Light Is Not Good: Well, the Imperials certainly look the part of “light”, being all shiny and glowy and identifying with all kinds of light- and flame-based imagery, philosophically and religiously, but “good” – well, unless your personal morality identifies the good really strongly with knowledge, beauty, excellence, negentropy, self-integrity, obligation, the inevitable march of progress, and remorselessly enforced free will (among other blue and orange things), not really. And if your notion of the good runs counter to those things – most commonly with utilitarian commitments to Luddism or collectivism – then Light Will Crush You.
(On another note, it may be noted that while among the eikones of eldraeic religion, the bright lights to aim at, there are eikones of good concepts – order, peace, prosperity, joy, justice, liberty, healing, honor, etc. – there is not one eikone that embodies good, as a concept. It is, ah, insufficiently nuanced.
Of course, there are none that embody evil, or indeed any concepts on the dark side of gray, either.)
(See also tomorrow’s trope-a-day, Good Is Not Nice!)