Customise the Out of Stock label for Product Variations

When a product is out of stock or variation not available. You can have that displayed with particular styles.
    1. Go to Products → Swatches Options → Global Settings → Other Settings → Behaviour for unavailable variationmultiple images variation woocommerce
    2. From the drop-down, you can pick the required style. Available styles are,
        • Blur with Cross
        • Blur
        • Hide