Don't worry too much, the orange red crystals are forming in the glass from my 12 year old daughter's urine, not mine.
I do know exactly what you are describing though. To see it is quite startling indeed
I had my daughter on only a few vitamins the week before. I think the culprit might be the betacarotine pill, the vitamin A one, the one that is soft and looks reddish orange.
Mind you I am only guessing, based on her good diet and that it has only happened when I put her on some vitamins.
I'll know for certain this week now that the vitamins have cleared out.