Removing or Covering Exposed Aggregate

A good mate of mine has just bought a house in Concord, Sydney which has predominately heritage type homes. They're the 60-90 year old Californian bungalow or Federation type homes. The one he bought was renovated a while back, 20 or so years and has been rendered and painted light blue, and has had exposed aggregate poured on the front porch and beside the house.

I'm wondering what options are available to either remove or cover over the aggregate to bring it back to a more traditional looking home.

In the pic attached you can see the exposed aggregate on the front verandah and foot path

Cheers

Whatsa so wrong with a pepplecrete mate, pebblecrete is a gooda stuff and isa plenty tough too.:D

LOL. I think thats the reason why he wants to get rid of it BL. He wants an Australian Heritage house not a Greek Heritage house.