Add Sticky add to cart button with variant selector without app (Shopify Dawn - Version 5)

Topic summary

A user seeks to implement a sticky add-to-cart button with variant selector on their Shopify product page (Dawn theme v5) without using an app. They attempted to follow a tutorial designed for Dawn v15, but encountered an error: “Unable to display color schemes. Schemes must be defined in settings_data and settings_schema.”

Proposed Solution:

  • Upgrade to Dawn v15 to make the tutorial compatible
  • Alternatively, use the “Add to Cart button” app from Shopify App Store

User’s Concern:

  • Upgrading to v15 would result in losing custom code modifications made to v5
  • Shopify’s update process won’t preserve changes that conflict with the new version

Status: The issue remains unresolved, as the user is reluctant to upgrade or use an app due to potential loss of customizations.

Summarized with AI on November 2. AI used: claude-sonnet-4-5-20250929.

Hello

I want to Add Sticky add to cart button with variant selector on my product page without app. Just like below screenshot.

url - www.jagstore.in

I followed the instructions on this blog. but it is giving error

https://mrdigitals.com/how-to-add-sticky-add-to-cart-button-on-shopify-dawn-theme-v15-without-app/

Maybe because i am using v5 and not v15

Error Details:

Unable to display color schemes. Schemes must be defined in settings_data and settings_schema.

Kindly help…

Hello @Jayesh-Agarwal I did some quick research and it looks to me that your best bet would be to switch to the version 15 and it should become an easy fix for you. Alternatively, if you do not want to change your version but you do change your mind about using an app, I’d recommend the Add to Cart button app on the Shopify App Store.

1 Like

Thanks for your suggestion. But i do not want to loose my custom codes which i have done to v5. As per the shopify update code changes won’t be included because one or more changes conflict with the update, incase i update to v15,