mobile

Hi guys, I've been trying to figure out how to change the icon of the navbar for a few days now, still have no clue. It would be nice to have the Stock Android look like this:
Attachment 3253408
I see some theme on the market which have the navbar icons changed, so I assume that it is possible to some options (which I don't know about) in the Theme app to do that without rooting my M9, right?

Thanks in advance :)

Attached Thumbnails