Variable product – add to price

Hi

I’m setting up a store with woocommerce where products are variable, and customer can choose 3 colors and one size.

Only the size will influence the final price. All the sizes and all the colors variations end up with thousands of different combinations. How can I set the price for the sizes only and not having to define price for thousands of different combinations?

Also I would prefer having a base price and then customer sees something like this:

size one (regular base price)
size two (+40€)
size three (+80€)

etc

Is that possible as well?

Thanks in advance for the help!