change offer size

I use a reduced Price for some products and will get a offer sign.
How can I Change this offer sign.
I want to Change the Color from green to red and the text.
Hope somebody can help me.
Here a link to my products:
kindly regards.

I Need now only to Change the old Price which is line-through the textcolor and when possible a bigger line through.
Hope somebody can help me.
kindly regards

Hey there,

I hope you are well today and thank you for your question.

You can try achieving this by adding the following CSS code in the Custom CSS option of your theme on the below path.

Admin Area -> Appearance -> Customize -> Additional CSS

/*change color*/
div.entry-content > div.woocommerce span.price > del > span{

In terms of line thickness, there isn’t a standards CSS code achieving this.

Best regards,

Kindly regards for your answer.
Is it possible to Change also the transparence of the Price which is line-through.
kindly regards

Hello there,

The following CSS can be used to change the opacity of the price:

/*Price Opacity*/
span.price > del > span.woocommerce-Price-amount.amount {
    opacity: 0.5;

Best Regards,