As everyone knows, old house restoration is a process, often incremental and often a compromise and stop gap measure , however it doesn't have to be an obvious one.
I had a small cover but it was slightly smaller than it should be to complete cover the offending pipe but it would work. The key was to make it seamless and mot have it stand out too much as we want the focus to be on the fresco work in the room. So while we were repainting the lower part of the wall its original color we also painted the pipe surround .
We decided to paint the cover the same color but the question was what to do with the center which normally has an ad or a design in it? As luck would have it I had an old periodical cover from the period that was in ratty condition except for part of the artwork.