Android Launcher

Hi guy. First time I write a post so let's see how it goes.

Once upon a time there was an android launcher that changes the black background of the navigation buttons to match the color of the app your using. So if you were using facebook instead of black you got a dark blue.

At that time (about two years ago) I didn't have an android phone so I didn't download it or anything, just thought it was cool. But now a have moto x and I been trying to find it again, but a can't remember the name of the launcher, the developer or anything at all, so it's been really hard for me to find it.

I would appreciate any information you guys have of it.