How The4 upgraded Gunderson’s Jewelers to Kalles 5 without breaking Rolex compliance

About:

Gunderson’s Jewelers is a long-established jewellery and luxury-watch retailer and an authorized Rolex dealer, running its store on the Kalles theme at gundersons.com.

Industry:

Jewellery & luxury watches

Upgrading a theme is routine — unless every pixel is governed by a luxury brand's compliance rules. Gunderson’s needed to move from Kalles 4 to Kalles 5 without changing a single thing Rolex cares about. Here's how The4 handled one of the most exacting upgrades a store can ask for.

The Challenges

Gunderson’s is audited monthly by Rolex, with extremely strict brand requirements. The upgrade from Kalles 4 to Kalles 5 — effectively a rebuild between two very different theme cores — had to leave the brand experience untouched:

• Keep the Rolex pages 100% identical — colors, fonts, spacing and layout — to stay compliant with monthly Rolex audits.
• Fix an outstanding WCAG accessibility issue on the submenu as part of the upgrade.
• Keep the existing sections as Liquid rather than converting them to JSON templates, preserving how the store is built.
• Migrate all Rolex-related metafields and metaobjects intact, and carefully verify the JavaScript and custom logic.

The Solutions

The4 carried out the Kalles 5 upgrade as a precise, compliance-first migration — modernizing the theme while preserving everything that mattered.

Pixel-for-pixel Rolex compliance

We rebuilt onto Kalles 5 while keeping the Rolex pages identical down to colors, fonts, spacing and layout, kept the section structure in Liquid (no JSON conversion), and migrated all Rolex-related metafields and metaobjects so nothing was lost in the move.

Accessibility and verification

We fixed the outstanding WCAG submenu accessibility issue as part of the upgrade and carefully checked the JavaScript and custom logic, so the store came out of the upgrade more accessible — and still audit-ready.

The Results

The4 delivered Gunderson’s on the latest Kalles 5 with accessibility improved, the Liquid section structure preserved, all Rolex metafields and metaobjects migrated, and the Rolex pages kept pixel-for-pixel identical — ready to pass the brand's strict monthly audit.

Conclusion

The hardest upgrades aren't about adding features — they're about changing the foundation while changing nothing the customer or a brand partner can see. The Gunderson’s project shows The4 handling a compliance-critical Kalles upgrade with the precision a luxury brand demands. If your store needs an upgrade done carefully, this is exactly the kind of work our team does every day.

Need a careful theme upgrade? Explore The4's Shopify services, or browse our premium Shopify themes trusted by 48,000+ merchants worldwide.