How to install elegance-colors Gnome shell on Centos 7

Hello guys anyone here have success on installing elegance-colors Gnome shell on Centos 7?

I have followed the steps on here http://ift.tt/UGMVcz

but when i type "Make" it gives me lots of errors about "vala".

I have already installed glib2-devel gtk3-devel vala. So what can be the problem?

Anyone here is using elegance-colors gnome shell on their Centos 7 installation?

Thank you