Default [Q] scalable icons in nexus5

I am a new android user, trying to configure my home skin.
In buzz launcher and homebuzz pack, I can see very attractive designs, with possibly scalable icons, e.g. homepack id 446131 (sorry being new user, i cant post links)
But I cannot found any such scalable icons in play store.

Is it possible to install those scalable icons (and fonts) in my unrooted device?
Kindly advice.