Atlantic Theme, Help in adding color swatch

Shopify Partner
56 9 11

Hi Everyone, 
I am trying to add color swatch on Atlanctic theme, 

Following this tutorial :

but I am unable to findout selectCallback function in my theme, as Atlantic is having totally different structure. 

Can anybody help me in fixing it?

I am struck with placing this snippet in product.liquid in selectCallback [I am unable to find selectCallback in theme]

{% if product.available and product.variants.size > 1 %}
{% render 'swatch' with 'Color' as swatch %}
{% endif %}

Please help in fixing this one or anyother best solution, which can work with Atlantic Theme.

Thank You in Advance.

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New Member
1 0 0

If it is not in Atlantic's product.liquid (if it even has product.liquid) then maybe it is in something similar? Maybe theme.liquid, theme.js, site.js? What I'm trying to get at is that themes will not look exactly like one another, but the logic should be similar. Try searching for said files if you have them and maybe try searching for similar keywords.