@MITech,
In the other books, its noted that the Orcs and the Elves are actually the same people, (although there are other contradictory explanations as well), and that the orcs became as they were, through being tortured by evil.
The Brown Elves in the Hobbit are not quite as nice as the Grey Elves and the Wood Elves, whereas the Sea elves are prone to faults of vanity. The Noldorian elves, are underground creatures, who were happy to destroy almost the entire Sea Elf fleet when they refused to give them transport to attack Sauron.
There is quite a lot of mixing up of good and evil amongst the elves. And they had numerous squabbles with the Dwarves too. A catankerous bunch of rowdy folk, themselves.
The annoying thing about the movie, is that it construes the Elves in a dishonest way. Except for Legolas, the elves mostly chicken out of the fight against Sauron and Saruman. They are not even at 'Helm's Deep'. Hardly a 'good and nice' thing to do, both from the elves, and hollywood giving them a far-too-rosy veneer.
Typically, Hollywood 'disneyfied' the story, and warped its realism into a mere fantasy movie! :thats-enough: