Difference between genuine white iPhone and converted ones?

So I have my black iPhone 4 for a little over a year now and at one point I gave my phone to someone to hold and when I got it back there was a slight crack on the front screen.

Looking for ways to repair the crack, I found on craigslist most people doing the front screen + LCD for ~$80 and the back for ~$20. Some were offering color conversions for ~$100 as well. So I was thinking since I'm going to have to fork out $80, why not just pay an extra $20 and turn my iPhone white.

That's when I started reading into OEM and grade A parts. Now, I don't really mind so long as they look exactly like the real parts. From what I've read so far (and I'd like someone to confirm), the white front screen's proximity censor must be a black pill shape instead of a bunch of dots for it to look like the real white iPhone right?

Another thing is that the headphone jack and dock connector will have to also change to white as well. If I change all of these, will it look exactly like a white iPhone? I want to make it so that my friends can't tell I converted my black one into a white one.

Edit: I know I have to also change the back and home buttons. When people say color conversions, do they usually include the headphone jack and dock connector? Cause I see a lot of pictures that only include the front, back and home button.

 

This is why.

http://i17.photobucket.com/albums/b88/nickt916/iPhones/P1010033-1.jpg

 

I like to do things to the best of my ability, I don't want it to look half-assed with white front, back and home button but then the headphone jack and dock connector is still black.