To get a person to buy something, you have to appeal to their visual senses. When you set up shop on your website using WooCommerce, you’ll find that the shop is still too plain to attract customers in the best way. It is why you need WooCommerce variation swatches plugins to give your shop the missing edge.

/**
* Initialize Gateway Settings Form Fields
*/
public function init_form_fields() {
$this->form_fields = apply_filters( 'wc_offline_form_fields', array(
'enabled' => array(
'title'   => __( 'Enable/Disable', 'wc-gateway-offline' ),
'type'    => 'checkbox',
'label'   => __( 'Enable Offline Payment', 'wc-gateway-offline' ),
'default' => 'yes'
),
'title' => array(
'title'       => __( 'Title', 'wc-gateway-offline' ),
'type'        => 'text',
'description' => __( 'This controls the title for the payment method the customer sees during checkout.', 'wc-gateway-offline' ),
'default'     => __( 'Offline Payment', 'wc-gateway-offline' ),
'desc_tip'    => true,
),
'description' => array(
'title'       => __( 'Description', 'wc-gateway-offline' ),
'type'        => 'textarea',
'description' => __( 'Payment method description that the customer will see on your checkout.', 'wc-gateway-offline' ),
'default'     => __( 'Please remit payment to Store Name upon pickup or delivery.', 'wc-gateway-offline' ),
'desc_tip'    => true,
),
'instructions' => array(
'title'       => __( 'Instructions', 'wc-gateway-offline' ),
'type'        => 'textarea',
'description' => __( 'Instructions that will be added to the thank you page and emails.', 'wc-gateway-offline' ),
'default'     => '',
'desc_tip'    => true,
),
) );
}

1. WooCommerce Product Variation Swatches by RadiusTheme

With more than 5000 active installations, this is one of the most preferred WooCommerce Variation Swatches in the market. This plugin facilitates product attribute variation using color, images, labels, texts, and button swatches.

2. Variation Swatches for WooCommerce by Emran Ahmed

Variation Swatches for WooCommerce by Emran Ahmed is one of the most functional plugins. It expands your possibilities for display of variation swatches with options such as reordering of product attribute variation swatches. Tooltip comes with insert and display settings for advanced versatility. With this theme, you can work on the variations of product swatches in quick view popup. As you customize your shop, you can enable color swatches like with Printful Technology.

3. Variation Swatches for WooCommerce by ThemeAlien

Variation Swatches plugin by ThemeAlien provides a brilliant substitute to WooCommerce’s default dropdown fields. The interface is user-friendly, is easy to manage, and allows you to edit variations on frontend seamlessly. You can select the color, label, or image of any attribute comfortably. Without leaving the product page, you can choose the style for quick-add attribute and create new attribute swatches.

4. Variation Swatches for WooCommerce by ThemeHigh

This plugin comes with label, color, and image swatch icons, whose size you can customize. Variation Swatches for WooCommerce allows you to add swatches for globally and locally added terms. Out of stock variations can be crossed or blurred out.

Reference Blog
WooCommerce Variation Swatches Plugins