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It is very easy to brick a device after rooting if you install custom roms and kernels. Why do you want to root? If you just want a different look, install a launcher app like Nova launcher. The xda thread you linked to actually had Nova installed as a system app which seems very strange - I wouldn't install any rom by someone who would do that.
If you want to root to use some apps that need root you could always try Towelroot.
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