Nothing is ever "contrary to" evolution. That's not how it works.
First of all, let's prove god's existence before we play hopscotch on each other.
The fact that humans are smart enough to come up with this technology is a clear example of evolution.
Although this thread was more directed at persons with religious beliefs, who might be against gene-engineering humans because they considered it to be against some "god's plan". I was attempting to say that, basically, how the hell do they know?
Sometimes I think we're alone. Sometimes I think we're not. In either case, the thought is staggering. ~ R. Buckminster Fuller
As long as we stick to genes that appear naturally in the human genome, and are otherwise very very careful, I don't have a problem with it.
Fiddling While Rome Burns
Carthago Delenda Est
"I used to roll the dice; see the fear in my enemies' eyes... listen as the crowd would sing, 'now the old king is dead, Long Live the King.'.."
False teeth and glasses are contrary to "god's plan", if you're discussing genetics.
Strictly speaking, clothes are a violation, too.
It would be contrary to the natural evolutionary process but that really doesn't mean much. Evolution happens, that doesn't mean it's intrinsically good.
Europe is illegally occupied by the US