Or is that on an individual, one by one variant thing?
Unfortunately, yes. 
Topic summary
A merchant is trying to add a second color metafield to display secondary color variants uniformly on product pages. Currently, only the primary color uses a category-level metafield that displays properly, while secondary colors appear as plain text.
Key Challenge:
- The existing color metafield is category-associated and cannot be duplicated
- Variant metafields exist but require manual, one-by-one setup for each variant
- Some products show display issues even with the existing category metafield
Proposed Solutions:
- Variant metafields - Create color-type metafields at the variant level, but requires theme code modifications to display like category metafields
- Metaobjects approach - Use metaobjects connected to variant metafields for easier management, though still requires individual variant setup and coding
Current Status:
No native Shopify solution exists. Implementation would require:
- Theme code customization
- Manual variant-by-variant configuration
- Potential complications with theme updates
One contributor offered paid assistance for setup and documentation. Two other users later confirmed they face the same limitation with no available solution.