Fix “Mismatched value [color]” on Google Merchant Center

Colour mismatch flags when the feed says one colour but the landing page or image clearly shows another. Common when wrong variant is linked between feed colour and landing page, or when the colour field reflects the parent product's dominant colour rather than the specific variant.

The variant-linking discipline matters here. Variant URLs should point at the specific variant — not the parent product page where Google might see a different default colour. Each variant's link, image_link, and colour all align.

For marketing-name vs standard-name mismatches (title says "Midnight Whisper", colour says "Navy"), the two should align in intent even when they differ in exact wording. The classifier is forgiving when title's colour name and field colour are obviously the same colour; less so when they describe genuinely different colours.