Once in build.prop you can edit the following things:
-edit Android Version by locating ro.build.version.release= and changing the current Build Version.
- Edit your Model # by locating ro.product.model= and changing your model #
- change your product brand by locating ro.product.brand=
My first thought to that is why bother fake it in photoshop when you can just simply edit a text file (build.prop) and change it to 4.2.7 if you wanna? That way you can make android 5.0 and it would look perfectly aligned and you cuold even make a video of it since it's pulling that information from the text file.
It's not that hard to do.