How to change the color sheme in 2014

hello

How to change the color sheme in 2014

Ok, sorry if my English isn’t good, but i didn’t spoke it quite a long.

I have a kind of problem. I have installed wordpress 3.9 days ago,
and have also installed some plugins – so that it serves my turn.

see the page: http://www.literaturen.org

i want to use twentyfourteen:

how to change the color-sheme:

note i have installed https://wordpress.org/plugins/fourteen-colors/

what can i do?