my leggings:( help!

k

hello everyone. so I bought this $65 leggings couple weeks ago. I have 7 month baby so I had some stain on it and used Oxi clean(washed for first time). I was using oxi clean on many clothes and it never happened. but with my expensive leggings it happened, the color fade out. I'm so upset don't know what should I do. it is expensive leggings and also those was my fav, even didn't use them for long time. it was first wash. plz any advice what should I do