Sorry for facing this issue, it's my pleasure to help us.
Welcome to the Shopify community!
and Thanks for your Good question.
sorry for your store is password protected can you please share with us
Hi, please search for .product--sale in your theme.scss.liquid file (or a related file) and make the following changes in the clock of code just below it:
1. Replace the background: one of the lines should read background: #383f4;
2. add this to change the text color of label SALE color: red;
And finally, to change the color of the original price, please search for the following (if you don;t find this exact phrase, just search for .product--compare-price)
.product--root[data-product-view=grid] .product--details .product--compare-price
add a line below padding-right...