The color of her poop should go back to normal eventually, can't tell you an exact day because i never have really paid super close attention to color change just texture really. All sorts of drugs can do all sorts of odd things, i used to take potassium pills and it made my pee neon yellow, my mom took some vitamin that made her pee neon orange...lol.
All that being said i imagine since it is an antibiotic it would be 14 days or less for poo color to go back to normal. I'm not sure if you did 3, 4, or 5 days for the dosing.....if we used human antibotic logic is says 9-15 days. Meat withdrawal time says 21 days.
Been having to take her with me twice a week since I'm away from home 5 hours. I think more people flock to see piglets than they do babies!!! And of course Pugsy ate up the attention. I've been heating rice socks for her. She is 2 weeks and 2 days old. I've been putting a few pellets of feed in her milk. Shes pan feeding as of Sunday as well. Still doing great, and getting plump!