Google Maps API Styled Map Wizard Colorize Help!

Hey guys, I’m very green at this code jazz. So my site has a google map embedded in it but the colors suck so I found Google Maps API Styled Map Wizard where I could colorize. My map was looking good, what next? I have no idea. It gives me the option to copy JSON code, but I don’t know JSON from Freddy. Please help me get going in the right direction.

I have seen colorized google maps and generated the map to my liking at Google Maps API Styled Map Wizard

Now what do I do?
I see it creates a JSON code, but I don’t know anything about that. Please help