If you had already installed the Pixel Launcher on your phone, make sure you remove it before installing this modified version (the two use the same package name). (nashvillechatterclass.com)
To find application package names and activities, you can use Activity Launcher on the Play Store to find the name of the activity. (xda-developers.com)
No, because the Pixel Launcher package name is not allowed. (droidholic.com)