Hi lawyerlinguist1
In this case, I suggest you to work with LESS file for global changes. Remember to backup your site first.
You can go to template >> enable Development Mode so your site will work with LESS files:
Now go to file: /templates/ja_morgan/less/themes/style-2/variables.less
It declares some specific variables for style-2 of template, primary/secondary colors there.
// Brand colors
// -------------------------
@brand-primary: #21c674;
@brand-secondary: #1e375c;
If you want to have the same color for style-4, you can copy to associated file of style-4: /templates/ja_morgan/less/themes/style-4/variables.less
Regards