are the fabrics you used hand dyes or batiks?
or red?
why do you think they will run?
first try a test- dampen the ones you think might bleed- and rub with a white paper towel (doesn't take much rubbing) if they will run you will know-
if nothing comes off on the paper-chances are they are not going to come off in the wash- and synthropol has to be used in hot-hot water- people seldom really wash their quilts that way- unless you find you do have a bleeder don't worry about it- wash it with cool/or warm water- toss in a color catcher just in case if it will make you feel better- and take it out the minute it is done (don't let it set wet crumpled on itself) and check it- if nothing is (amiss) toss it in the dryer-
if it does run at all you can wash it again before drying it- you can (spot treat) any small areas and rewash.
it is a whole different ball-park if it's made with batiks & hand dyes---they tend to run- sometimes for numerous washes- then you have to deal more...