i would certainly not use hot water on it!!! those reds will really run then!
you could try some detergent- cold water- the synthropol will keep color in the water from getting on other fabrics- retayne- helps set color-
since the fabrics are mottled= when it is at the show- only you will know the fabrics are not what you originally purchased---the good thing about our (errors) are only we know it is not what it was intended to be---they will have no idea