Hi Phyllis as far as I know once stucco is painted there is no way to remove the paint. You could always paint over it though.
Paint over it.
You can try a power washer, but that may remove too much.
Hi Phyllis: Here's a site that should help. I think the product they're not mentioning is Citristrip, available at most home improvement stores and it has no smell, really, and is safe to use: