Even though you customize the swatches for all attributes, including global and custom attributes. But in case you want to make them different on some specific products. You can do it in the product data.
Step 1: Go to Product data of the product you want to customize its attributes >> Attributes
Step 2: Select the attribute to customize >> Click “Swatches settings”
Step 3: Configure the swatches settings
- Make your settings with these options: Product list visibility; Style; Type; Swatches Profiles; Change product image.
- Add an image/color(s) for the attribute terms if needed.
- If you want to keep the initial settings of any option in the Swatches settings, select “Global …”
- If global attribute: The option will inherit its initial settings in the “Global Attributes” settings.
- If custom attribute: The option will inherit its initial settings in the “Custom Attributes” settings.
Step 4: Click “Save attributes“.
Now the attribute is edited on that product. On other products, it’ll still show up like how you configure in the Global/Custom Attributes settings. Go to the frontend to check.