Beauty the Alter Rebbe teaches is when colors combine.
One color is hardly beautiful.
Similarly, uniformity – if all people are clones of a central doctrine – is not beautiful.
Beauty is apparent in a religion that allows for self expression, so many people are working on the same goal.
In Judaism, uniformity was never a necessity, for God’s greatness is such that even in opposing Torah views, both are the word of the living God.
Beauty is in all people striving to do the right thing.