Is there a way to install a Yosemite theme on mavericks? Without Flavours?

I have Mavericks on my mac and I want to make it look like Yosemite.

Is there an alternative to Flavours (my trial period is running out) that will allow me to install a Yosemite theme for FREE?

I found out about Flavours here: http://ift.tt/1x8vm90