Where is a limit of "overdesign"?

Probably not the best place to ask but eh... here i go:

So a while back i started working on "LimitlessUI" - library for winforms(http://ift.tt/2nsPpAA). And one of the items that i created was "material styed textbox" (Im arent really proud of this one BUT i guess its good enough :) no complains yet :D )

So whats the problem with it? Some of my friends didint even notice quite cool(in my opinion) animation, others say that its amazing, one guy even said "you are just wasting cpu cycles" :D

So anyways, im wondering what are the thoughts of people that have some experience in designing?http://ift.tt/2na1msd

LimitlessUI Textbox demo

and if any1 is intreasted - here is my try(with the same library) on Windows 10 inspired application (still working on it) System Monitoring application