Why do button colors vary on these two pages?

[empiricalarby]

Please notice the add to cart button on each of the two following pages:

https://empiricalwater.com/products/empirical-water-free-sample

https://empiricalwater.com/products/empirical-water

I'd like to make the first link look just like the second. Meaning, it should have #002851 for the background and #ffffff for the text. Thanks

[Dirk]

Hey, @empiricalarby 

Did you happen to create unique product templates to for those products. Typically your add to cart button will remain the same unless some additional coding was performed.

With that said, I'm confident one of our Shopify experts would be able to accomplish this at a reasonable price.
 
Just wanted to share this as an option in case you are unable to find a coding solution in your thread.