IIRC these themes are available for purchase - on the themed hardware that they come with. If it's important to have that theme, buy the Batman edition or Iron Man edition, etc. Bypassing the restrictions via tricks in software is the same as pirating paid content and falls under the "illegal activities" category of our forum rules. If you don't want to spend $600+ on a theme (and I'm with you on that), check out some of Ara's many many posts on how to create your own themes and make one that's similar and better because it's yours. A lot of the work is just wallpapers, which can be found for free on Google searches and icon packs, which are everywhere in the play store and usually under $1-2. For themes that get into menus, etc. ... that's a bit more difficult to do without root and access to things like xposed, etc.