Differentiate between list price and current price for formatting

I show a list of discounted products in a block and would like to format the list prices differently than the actual prices (list prices will have strike-through).

When I look using firebug, it appears that list price and actual price both use the class uc-price and I'm not seeing a way to differentiate between them for the custom css I will add.

Is this something I should already be able to handle, at least for now, and can this be addressed to make it easier in the future?

Thanks.