For that certain clock mentioned in the OP. Try Blue Glass. It's only a skin its removeable.
I wouldn't recommend flashing anything that requires using recovery. It mite change the framework. But Skins are basically apps. Just install it like an app and remove like an app if you don't like it.
With xda:devcon ’14 just around the corner, and the venue close to selling out, there is a lot … more
18 Sep 2014
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