No harm done Peter. As far as the use for puerparal sepsis goes, this is where it gets complicated.
In 1935 in France, a team in the Pasteur Institute discovered that the effectiveness of Prontosil Rubrum was due to a substance called sulfanilamide. The Rubrum part of the name as you can guess, derived from the red azo dye that the the substance was originally derived from. What was happening was that the original azo dye was reduced by the host animal to sulfanilamide. IG Farben, a chemical company, closely involved in the atrocities committed during WWII, played a major part in this research - if you are interested, the Wikipedia article on the company makes grim reading.
Returning to your last post, yes the original in vivo trials of Prontosil Rubrum did indeed turn the patients red because they had effectively ingested the red dye and contemporary reports back up your claim about how these patients were treated.