Yep... Pretty much exactly what my girl's looked like too for the first few weeks of Antibiotics... I definitely remember the orange crystalline look. It did go back to more normal even while she was still on antibiotics; however, I remember seeing it a few times (especially during the beginning) during her treatment.
Keep an eye on it, you are on the right track and doing the right thing, but I don't think you need to be too worried about it just yet IMO.
Any others with experience on this?