You might want to wash each fabric individually in Retayne to try to set the remaining dyes.
There is a difference between excess dye and unset dye.
Excess dye is more dye than the fabric can absorb; manufacturers who don't rinse well enough will leave excess dye in the fabric. Once the excess dye is rinsed out, the fabric stops bleeding.
Unset dye results when the manufacturer has not used the correct dye setting process. Unset dye will continue to bleed out of the fabric with every washing. Retayne works to permanently set the dye when the manufacturer has failed to do so. (It's also used to set home dyed fabrics.)