Swatch Size of Custom Attributes

Hi, I have 2 questions about the Variation Swatches for WooCommerce plugin.

1. I am trying to Customize Swatches Width and Height for Custom Attributes (not global attributes). My image variations are specific to each product, hence would not make sense to create globally.

I want to only make my image variations bigger (whilst button attributes remain the same size) How do I do so? I am unable to choose my attribute under the Special Attributes>Large Size Attribute Section because my attribute is not globally created so the only option under ‘Choose Attribute’ is -First Attribute-. This is not helpful because some of my First Attributes are button attributes.

I have found another ticket which wants to change the Size of Color Swatches only. In my case, I want to change the Size of Image Swatches only. I tried to insert the Code provided https://getwooplugins.com/ticket/83451/ but there was no change on my website. What should I do?

This was the code provided:

/* Change color type size */
.variable-item.color-variable-item:not(.radio-variable-item) {
width: 40px;
height: 40px;
}
/* Change image type size */
.variable-item.image-variable-item:not(.radio-variable-item) {
width: 50px;
height: 50px;
}

Can I use this code too? If so, how?

2. Additionally, how do I only display Image Swatches (no button swatches) on the product catalog/ shop page?

I really appreciate your help on this. Thank you in advance.