sorry, it’s the code you asked me to try.
{% assign prod_variant_count = 0 %}
{% if product.available and product.variants.size > 1 %}
{% for option in product.options %}
{% if option contains 'Color' %}
{% for variant in product.variants %}
{% assign prod_variant_count = prod_variant_count | plus: 1 %}
{% endfor %}
{% else %}
<small>No Color variants</small>
{% break %}
{% endif %}
{% endfor %}
{% endif %}
{% if prod_variant_count > 0 %}<small>Colors available - {{ prod_variant_count }}</small>{% endif %}