adding the script.js and colorcontrast.phtml file and adding the script.js to page.xml
removing the script.js as to add only the required function in the custom-script.js and modifying the page.xml
Adding Color Contrast to collar and cuff

Adding Color Contrast to collar and Cuff, both inside lining and the outer
lining.

A Global variable has also been used to declare the url:

The Undo function is not done at the moment
Fixing the Cuff color not changing issue