Scripting help for a complete Html dummy

I’m going to be working up a site on Webflow and I have figured out how to design. The one thing I can’t figure out so far is how to embed custom scripting. I know, I know……it’s easy. Having taught myself photoshop and Illustrator I thought I might be able to research enough to at least get this one thing done. Nope. I will learn it one day, but I just don’t have the time right now.

What I am looking for is to have a color changing shirt template that the customer can go in and change the color of the shirt behind my design. It will only be for looking purposes because I want them to call my office. I found this and it seems to be what I’m looking for.

http://sandbox.nikorablin.com/productColorizer/#options

Is there anyone that can walk this idiot through this or let me pay you to do it for me? Please help me!