How to change the color of login button in new customer accounts

Topic summary

Merchants who switched from Classic to New Customer Accounts are unable to customize the login button color, which defaults to blue.

Technical Issue:

  • The login page loads CSS from a third-party Shopify URL (customer.login.shopify.com), not from the store’s theme files
  • Custom CSS added to theme files has no effect since styling is externally controlled
  • Shopify support confirmed that modifying the new customer account login page style, including button color, is not possible

User Impact:

  • Multiple merchants report the same limitation
  • Some find the blue button problematic for brand consistency (e.g., nearly invisible against white backgrounds with certain accent colors)
  • One merchant questions whether switching is worthwhile given the inability to customize and loss of social network login options

Current Status:
No workaround exists. Merchants are requesting Shopify add the ability to change button colors, but the feature remains unavailable.

Summarized with AI on November 10. AI used: claude-sonnet-4-5-20250929.

Can you link their account login page here showing the styling?