Not sure if this is a templating or attributes question or if it is answered somewhere else (I honestly can't think of a suitable search term)

I have a customer who would like to show attributes as follows:
* Black MRRP £10 Our Price £8.50
* Blue MRRP £11 Our Price £8.75
(etc)

At the moment the discounted prices are a store-wide percentage discount although I'm sure that'll change at some point to be more variable by product.