Hello,
Please try to use the below code for help, define it in Theme Settings -> Custom CSS.
.wd-product-filters .wd-swatches-filter .wd-swatch.wd-text {
border: none;
}
.wd-product-filters .wd-swatch.wd-text .wd-swatch-text {
font-weight: 400;
padding: 0;
color: #777;
}
.wd-product-filters [class*="wd-swatches"].wd-text-style-4 :is(.wd-swatch-wrap a:hover,.wd-swatch-wrap.wd-active) .wd-swatch.wd-text {
border-color: unset;
background-color: unset;
color: inherit;
}
Kind Regards