I have had very good results with all fabric bleach which is sodium perborate. Sometimes the same chemical is packaged in a fancy bag and sold at high prices as "Antique linen wash" or some such thing. I have never known it to fade colors. It is made to be used on colors.
I remember an appliqued pansy quilt that I washed for a customer - the background looked like it was tan, it was so grimy. Soaked it and washed it (by hand) and it came out the muslin color it had been originally. The change was so drastic DH thought I had ruined it!!